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AWS Migration Tutorial | AWS Migration Tools | Intellipaat

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This article describes Amazon's core migration framework-basic migration steps that apply to any AWS migration project, and methodologies for moving each of your apps to AWS, ranging from lift-and-shift to refactor/re-architect.
Let's discuss the five major processes below to simplify the AWS migration process. Table of contents:
Watch this Complete AWS Course video to learn more about AWS concepts.

What is Cloud Migration?

Cloud migration is the process of migrating all or part of an on-premise IT infrastructure to the cloud. This could involve enterprise apps, data, procedures, and more, with the aim of lowering costs and allowing for faster scaling.

Any gear or software you run in a physical building, mainly where your employees work, is considered on-premises. When you migrate to the cloud, you are transitioning from an on-premises platform to a cloud-based platform.

Benefits of AWS Migration

There are numerous reasons to migrate your IT infrastructure to the AWS cloud. AWS offers a variety of computing resources to handle your IT-related operations, enabling your employees, time, and money for tasks that directly contribute to the bottom line.

By migrating to cloud infrastructure, you reduce the restrictions placed by physical data centers and get access to data from anywhere and at any time. Among the top AWS customers are Netflix, Facebook, and BBC.

Let's take a closer look at how cloud-centric Amazon Web Services can help you keep your IT operations and expenditures lean and efficient.

Low Cost: The AWS cloud platform enables you to run enterprise apps and systems at no upfront investment. The only cost incurred is when cloud computing resources are utilized.

Scaling up and down to meet current demands is also much easier with cloud assets, which can be deployed on demand, and cloud cost management tools allow you to keep your cloud spending under control.

Flexibility: It should come as no surprise if your present operating system and database are already AWS-compatible. AWS solutions are compatible with nearly all computer frameworks and coding languages. As a result, your developers' time and resources are saved.

Whether you're migrating to the cloud, switching to a new cloud platform, or preparing for DevOps, AWS's elastic architecture lets you swiftly supply as many resources as you need.

Security: With more data breaches occurring throughout the world, the cost and need for cybersecurity is greater than ever. AWS prioritizes data security with a shared responsibility approach. AWS offers you a worldwide secure infrastructure while also maintaining legal compliance.

Customers. On the other hand, bear the duty for integrity, confidentiality, and availability. AWS allows you to secure your data and govern your content in accordance with best security practices and requirements.

Disaster Recovery: By using cloud-based disaster recovery techniques, you can eliminate the danger of power outages, software failures, data corruption, and human error. These approaches are simple to implement because most procedures can be automated, saving you time and money.

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Phases of AWS Migration

Data migration appears to be a simple operation because it simply refers to shifting data from one area to another. However, it is more complicated because the process is divided into phases. Let us now discuss the different stages of migration:

Phase 1: Discovery

There are occasions when you do not need to shift your entire business to the cloud. This is when segregation comes into play. You must determine which apps can and cannot be migrated.

Phase 2: Assessment

AWS provides several options to migrate your application depending on the data, such as AWS Snowball, AWS Snowmobile, AWS Direct Connect, and so on. Once you've decided on an appropriate method for moving your data, check for the resources you'll require.

Phase 3: Proof of Concept (POC)

Once you've determined how and what you're migrating, you must determine how and where you'll keep it. The whole point of migrating to AWS is to cut costs. During this phase, you will test your workload and learn about AWS Storage Service, its benefits and limitations, as well as the necessary security controls.

Phase 4: Application Migration to AWS

Now that you have all of the prerequisites in places, such as the blueprint, migration tools, assignment list, backups, and synchronization with your on-premises data repositories. You can finally move your project to AWS Cloud. When you migrate your project to the cloud, you gain stability and durability.

Phase 5: Enterprise Cloud Operations

You've already migrated to AWS at this stage, and AWS will deliver updates that you'll need to fit into your existing architecture. As a result, you must ensure that you have a 24-hour support team monitoring system maintenance and upgrades following the migration.

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AWS Migration Strategies

Because the complexity of moving existing applications varies based on the architecture, Amazon developed various solutions known as the 6 R's. Let's take a closer look at each of them:

1. Rehost: Once your application is complete and operational, you can easily Rehost it on AWS. Also known as "Lift and Shift." You export your services and apps from your hosting environment to the cloud via a third party.

2. Replatform: Because your application is running an outdated version on your hosting environment, you must alter it and then rehost it. Replatform is a variation on "Lift and Shift." It comprises optimizing the cloud architecture to reap the benefits without changing the basic design of the application.

3. Repurchase: Certain applications would be incompatible with the new architecture. In that situation, you'll have to buy a new application to accommodate the new architecture. AWS Marketplace offers a wide selection of services, all with a "Pay as you Use" approach. Repurchase is also known as "drop and shop" since it allows you to upgrade, simplify implementation, accept new architecture, and make modifications to the present model.

4. Refactor: You want to add new features, expand the limits of the present business model, and achieve performance that is challenging in the current context. You reassess your requirements, despite the fact that the answer is rather costly. Moving your organization to a service-oriented architecture (SOA) will help it in the long run.

5. Retire: After AWS Migration, you will be able to distinguish between useful and worthless resources. As a result, you cut off any resources that are no longer helpful to the business and construct a strategy around the new resources. This will reduce the additional cost. With fewer concerns, you can now concentrate on sustaining the resources required by the new company model.

6. Retain: As you are aware, the components of your project require migration. You can simply employ any of the tactics listed above. Create a strategy to keep those apps that, according to your business model, are not yet ready to be transferred to the cloud or that have recently been improved.

Enroll today in Intellipaat's AWS Cloud Migration Course and kickstart your Cloud journey!
AWS Migration Tools & Services

CloudEndure

AWS CloudEndure is a well-known AWS migration solution that builds a business continuity software system for disaster recovery, continuous backup, and live migration. It enables enterprises to quickly and easily transition from their present data centers or cloud centers to AWS. It aims to optimize, accelerate, and automate the entire migration process by rehosting multiple machines with smooth compatibility management.

AWS Migration Hub

AWS Migration Hub serves as a one-stop shop for cloud migration. It accelerates and streamlines the entire AWS process. It functions similarly to an application in the AWS Management Console in that it monitors other tools and tracks the overall infrastructure status of servers, databases, and so on. AWS Discovery tools, AWS migration programs, and AWS Migration tools are among the tools included.

AWS Migration Acceleration Program (MAP)

AWS MAP is a training approach developed by AWS to aid in the process of successfully implementing their cloud strategy & migration program with appropriate assistance and best business efficiency. It provides a readiness assessment, an AWS migration plan, extensive training, and ongoing support. Large business units with demanding large-scale migration needs are the target of this contemporary strategy.

AWS Marketplace

AWS Marketplace functions more like a digital library and online software store, allowing customers to search for, purchase, and deploy third-party data, software, and services for AWS solution execution and business execution. Among the numerous possibilities available through various software providers after a curation method, there is software for each phase of the full migration procedure.

Turbonomic

Turbonomics is an outstanding analytics solution that will assist you in maintaining proper resource allocation, scaling your resources, and avoiding large expenditures. The platform provides excellent capabilities for assessing and optimizing your resource consumption, adhering to rules (if applicable), and automating alignment and integration of all of your AWS services. While there are several Turbonomic equivalents, they do not compare in terms of simplicity of use and features.

Conclusion

Amazon Web Services provides cloud computing resources for managing IT infrastructure, allowing businesses to concentrate on core activities and increase their bottom line. The advantages of having a cutting-edge and low-cost cloud infrastructure for your business cannot be overstated.

The AWS cloud's versatility not only allows you to access your data remotely at any time, but it also allows you to quickly scale your cloud resources up and down to match your changing business demands.

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AWS Migration - AWS MIgration Tools & Services | Intellipaat

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This article describes Amazon's core migration framework-basic migration steps that apply to any AWS migration project, and methodologies for moving each of your apps to AWS, ranging from lift-and-shift to refactor/re-architect. Let's discuss the five major processes below to simplify the AWS migration process.

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What is a Cloud Migration Strategy? | VMware Glossary

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A cloud migration strategy is the high-level plan an organization adopts to move existing on-premises and/or co-located application workloads and their associated data into the cloud.

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How to Migrate on AWS Cloud Services (AWS): Steps to Successful Cloud Journey

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As companies move to a hybrid work model after Covid-19 restrictions, the demand for cloud computing is increasing exponentially. According to a report from Markets and Markets Research, the cloud computing market size is estimated to grow from USD 445.3 billion in 2021 to USD 947.3 billion by 2026 at a CAGR of 16.3%.

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Many companies don't know where to begin when migrating to AWS. Some worry their data will leak, while others don't know the most efficient migration strategy for AWS. Another group worries about overspending when moving to AWS.

The migration strategy involved plays a crucial part in all of these concerns.

This guide will discuss more than just AWS cloud migration strategies. It'll also discuss why you may want to move to AWS, the challenges you may face when migrating, and which method to adopt for what use cases.
Table Of Contents
What Is An AWS Migration?

An AWS migration refers to the mass transfer of workloads from an on-premises environment, private cloud, or public cloud to AWS's public cloud infrastructure. Besides moving applications, databases, and data centers, you can also migrate websites and virtual servers.

Why Migrate To AWS?

AWS provides the most extensive cloud infrastructure in today's market, beating both Azure Cloud Service and Google Cloud Platform (GCP), which are second and third, respectively. It also provides a ton of experience in cloud infrastructure management than most. But that's not all.

AWS benefits include:

Cloud services options. Over 200 AWS services provide broad options for various use cases, including cloud storage, databases, compute, serverless computing, ML/AI, networking, and automation.

Flexibility and use cases. There are also several more options within each category. As an example, AWS compute services include Amazon EC2, AWS Lambda, Amazon Elastic Kubernetes Service, and AWS Fargate.

Uptime. AWS consistently offers 99.99% uptime and boasts a 69% drop in unplanned downtime.

Latency. AWS provides consistently low latency for workloads that require it for smooth operations.

Cloud security. An IDC study found migrating to AWS could improve an average company's risk of security breaches and related events by 43%.

Cost-efficiency. IDC also found that companies that used AWS could save 31% on infrastructure costs compared to those using on-premises infrastructure. AWS offers discount pricing options such as AWS Savings Plans , Spot instances , and Reserved Instances to help users reduce costs.

Server capacity. AWS has near limitless server capacity that companies can purchase, increase, or decrease on-demand.

Energy efficiency and sustainability. AWS is about 3.6 times more energy-efficient than similar-sized, regular data centers. While it is not carbon-neutral yet, using AWS can help you lower your data center energy bills.

Availability zones. AWS has the largest footprint of the top-three cloud providers at 76 availability locations in 24 regions (compared to about 60 for Microsoft's Azure and around 33 for Google's GCP).

Expertise and support. AWS experts are more readily available than other platforms' technicians.

Suitability for SMEs. AWS offers the most SME-friendly platform in terms of options, pricing, and support.

Regular updates. AWS regularly updates its many services without requiring users to do anything.

The AWS Free Tier offers six services to help new users migrate to the AWS cloud infrastructure for free.

With so many advantages over the competition, you might want to migrate to AWS immediately. But why don't all companies migrate to the cloud - or AWS, for that matter?

That's because it can be challenging.

What Are The Challenges Of Migrating To AWS?

Moving to the cloud step-by-step is challenging for many companies. It requires meticulous pre-planning, expertise, monitoring, and transferring massive amounts of data securely, quickly, and without service disruptions.

These are some more cloud migration challenges, some of which are specific to AWS migrations:

The length and cost of an AWS migration is difficult to estimate accurately.

Moving workloads to AWS can be costly.

Training internal teams to migrate successfully can be time-consuming yet insufficient.

Companies struggle to track real-time migration costs and progress.

Companies do not always have, find, or keep experienced AWS migration experts on staff to oversee the entire process.

In addition, cybersecurity, data analysis, and cloud experts are in short supply compared to demand.

Moving all or a significant chunk of workloads can overwhelm engineering.

Manually moving workloads to the cloud can lead to security, performance, and compatibility issues.

As opposed to moving to PaaS, migrating to an IaaS like AWS can be more challenging as it is not prescriptive in its usage.

Companies struggle to identify which workloads are driving their cloud migration costs.

Many organizations struggle to put guardrails in place to prevent overspending during workload migration.

By anticipating and preparing for these challenges before migration, your team will be better prepared to handle them.

Still, deciding on the actual migration strategy remains a challenge. So the next section will cover each of the seven R's of an AWS migration, explaining what they are, benefits, limitations, and when to use each.

What Are The 7R's Of AWS Application Migration?

The seven common AWS cloud migration strategies are Rehosting, Replatforming, Repurchasing, Refactoring, Retiring, and Retaining operations. Gartner introduced the first 5Rs of cloud migration in 2011. Over time, that evolved into the 6R's, which recently advanced to the 7R's
Credit: AWS migration readiness Here is how each of those compares in terms of AWS migration readiness.
1. Retiring or retire strategy

Retiring means decommissioning workloads you no longer need in your existing environment.

The first step is to discover all your workloads within your source environment. After evaluating each, you can decide which are still helpful and turn off or remove those you no longer need.
What are the benefits of the retire AWS migration strategy?

The passive migration strategy requires the least funds, time, unique expertise, and effort.

Turning off unneeded workloads allows you to eliminate performance, cost, or security drains on your IT resources.

Redistributing resources to useful workloads and processes can improve their performance for no extra cost.

What are the risks of retiring?
When workloads are archived prematurely, they can introduce compatibility, or performance issues, which later may cost more to fix. Conducting a thorough cloud suitability assessment during pre-planning may prevent this potential mistake.
When to retire applications
Identify any redundancies you will no longer require after migrating to AWS, from workloads, processes, and tools, to backup solutions. Shutting them down can have immediate cost savings.

Otherwise, migrating redundant workloads to AWS could result in soaring cloud costs .

2. Retaining, retain, or revisiting strategy

The retain strategy refers to maintaining workloads on-premises with a plan to revisit them later for further decision-making. For example, a legacy but mission-critical application might have an unsupported operating system or other components that are difficult to integrate into AWS infrastructure. You'd need to run it on-premises while you decide what to do next.
What are the benefits of retaining as an AWS migration strategy?

It is an opportunity to identify which workloads should not move to the cloud.

Keeping on-premises inefficiencies away from the cloud helps reduce cloud waste.

The method provides a platform for running recently upgraded applications before they need further updates or retiring.

What are the disadvantages of retaining strategy?

The longer you keep the workload on-premises, the more resources you may waste supporting it.

Maintaining the status quo may mean not exploring more efficient, secure, cost-effective, and productive practices in a new environment.

When to use retaining strategy
A 2021 O'Reilly's survey found 55% of IT pros chose to keep applications in their local data centers due to security, cost, compliance, inadequate cloud management skills, and other reasons.

Furthermore, according to another survey, these are the same reasons companies cite for adopting hybrid cloud strategies (hosting workloads both on cloud and on-premises).

Most cloud adopters do not move all their workloads to the cloud.

So, retaining is ideal if:

There is also the option of relocation if retaining workloads is not what you seek.

3. Relocating, relocate, or hypervisor-level lift and shift

Using VMware Cloud on AWS, you can move infrastructure to the public cloud without the need to rewrite application code, buy new hardware, or alter existing operations.

Organizations who use VMware as their on-premises data center can create a virtual data center using the same vSphere building blocks in VMware Cloud. As a result, it becomes possible to move servers without affecting the workloads running on them.
What are the benefits of relocating as an AWS migration strategy?

Supported workloads continue to operate normally.

VMware Cloud backup eliminates the need to maintain an on-premises data center that is vulnerable to physical risks just as much as any other.

You can move workloads quickly because it requires minimal modification to an app.

It helps reduce the cost of operating a data center(s), including physical security, upgrading hardware and software, and fixing worn-out or damaged components.

As there are no significant changes, retraining employees is not necessary.

VMware environments run on dedicated hosts, which may maintain or optimize application performance on AWS.

Because it limits scaling up and down, costs are more predictable.

The vMotion technology enables a live migration, allowing a virtual machine to be moved from on-premises to the cloud while it is running.

What are the disadvantages of the relocation strategy?

The mode restricts the number of AWS cloud-native features available, such as AWS Auto Scaling with EC2 instances or containerization with AWS Fargate.

Since most of the operations are still managed by the organization, relocating does not shift much responsibility to the cloud provider to help save time, effort, and talent search.

VMware licenses can be expensive to maintain.

Since AWS Auto-scaling is restricted, automatically scaling down to save costs is virtually impossible.

When to use a relocate migration strategy?
The migration method is unique to VMware Cloud on AWS.

What if you don't currently use VMware or prefer a more AWS-integrated solution? Consider rehosting.

4. Rehosting, rehost, or lift and shift migration

AWS rehosting means moving an on-premises application and its dependencies to AWS, as is or with minimal changes.
Credit: TXture
Here is a comprehensive guide to lift and shift or rehosting migration . It discusses how to rehost applications in the cloud, examples of lift and shift migrations, and the best use cases for rehosting.

There are several reasons why lift and shift is the most popular migration strategy across the board.
What are the benefits of rehosting or lift and shift AWS migration?

Using rehosting, companies can increase their systems' resilience, service availability, and more without costly system upgrades.

It is possible to transfer entire legacy systems this way.

This is a first step toward modernizing on-premises operations without overwhelming users or teams.

It reduces migration time and costs.

Organizations can use it to transition to the cloud on short notice, such as to beat an upcoming lease renewal.

No additional skills or processes are needed for the management process, saving time and money for staff training.

Reducing the amount of hardware, locally installed software, and physical security required to run things on-premises can yield immediate cost savings.

Rehosting provides a chance to experiment on AWS to justify refactoring in the future.

The strategy immediately reduces the costs of operating a local data center by converting capital expenditure (CapEx) into (ideally) lower operating expenses (OpEx).

The system enables adopters to benefit from certain cloud capabilities, depending on their workloads.

What are the disadvantages of rehosting? When to use the lift and shift or rehosting strategy
A lift and shift strategy is ideal for organizations that have to move quickly to the cloud without spending a lot of time, money, or talent changing an existing system. This may also be an ideal option for adopters who want to start using some cloud functions immediately while planning to make more extensive changes in the future.

5. Repurchasing, repurchase, or "drop and shop" migration

Repurchasing aims to replace an on-premises solution with a cloud-first alternative. Often, the solution is a Software-as-a-Service (SaaS) solution available in the AWS Marketplace.

Dropping your custom email system for an email-as-a-service system like Gmail, replacing a self-run CRM with a Salesforce subscription, or adopting Asana for team collaboration are examples of repurchase migrations.
What are the benefits of repurposing as an AWS migration strategy?

Adopt a cloud-optimized solution quickly.

Reduce migration costs drastically.

Take advantage of more cloud-native features than rehosting.

It helps replace legacy systems whose functions are critical but whose architectures are incompatible with or difficult to migrate to Amazon Web Services.

A flexible subscription-based model replaces the traditional license model, which offers cost allocation and tax benefits.

It may provide feature set upgrades, which can improve user experience, application performance, and cost-effectiveness

The SaaS product might not require extensive technical training since it works similarly to an on-premises system.

What are the disadvantages of repurchasing? When to use repurchasing
Drop and shop when you want to utilize cloud-native capabilities without building the system yourself or from scratch.

6. Replatforming, replatform, or "lift, tinker, and shift" migration

Replatforming means modifying existing on-premises workloads to work optimally in the cloud while retaining much of their core architecture.
What are the benefits of replatforming as an AWS migration strategy? What are the disadvantages of replatforming?

Even if it requires only minor changes, making the changes can still be costly and time-consuming compared to rehosting.

Applications that have been modified may malfunction, experience outages, or have bugs that disrupt end users' experiences.

It requires thorough testing, continuous AWS monitoring , and anomaly detection to avoid costly issues.

When to use replatforming to migrate
A replatforming approach is ideal for organizations that want to implement a cloud-first strategy in operations but are concerned about the risks of an all-out AWS migration, such as service disruption, opening up new security gaps, and overwhelming staff or users with entirely new procedures.

But perhaps you have tried rehosting and replatforming and haven't seen the full benefits of cloud computing. The following migration method may help.

7. Refactoring, fefactor, or re-architecting

Refactoring an application involves rebuilding it from scratch to support cloud-native capabilities. Re-architecting is the most resource-intensive of the seven options, but it is also the most rewarding, transformative, and future-proof.

Refactoring is one of "The Big Three AWS migration strategies", along with Rehosting (lift and shift) and Replatforming (lift, tinker, and shift).
What are the advantages of refactoring as an AWS migration strategy?

Incorporating the AWS Well-Architected Framework into application development and design makes it fully cloud-native.

An application can be redesigned to support advanced cloud-native capabilities, including serverless computing, remote working, distributed teams, and AWS Autoscaling.

You can break a monolithic app down into microservices and containers to improve agility and resilience, which you can then manage with Amazon Elastic Container Service (Amazon ECS) and Amazon Elastic Kubernetes Service (Amazon EKS).

The adopter can achieve application performance and automation levels that are impossible in on-premises environments.

Refactoring can ensure business continuity regardless of the on-premises environment.

If a business needs to pivot, this is an easy and inexpensive way to repurpose resources for a different market.

A refactoring project with the right product-market fit will ultimately result in the best cloud resource usage and savings over time.

In the image, you can see how cloud spending should evolve for a successful re-architecting project. Initial refactoring costs increase, but they should decline over time. Cloud spending should also decrease unless you are experiencing rapid growth, which will require more cloud resources to support. What are the disadvantages of refactoring?

The process requires thorough planning, execution, and testing to prevent errors from causing cloud security, performance, and cost problems.

Executing it takes the most time, effort, and money.

It involves reimagining how legacy workloads work with cloud architecture, so advanced cloud expertise and staff training are required.

Cloud-native applications require continuous monitoring to maximize performance and optimize costs.

When to use refactoring to migrate to AWS
Rebuilding requires a lot of resources and commitment. Use it where there is a strong business case for investing in cloud-native capabilities over the long run.

Take The Guesswork Out Of Migrating To AWS And Move With Cost Confidence

Moving to AWS can be challenging, particularly with no way to monitor progress or track costs in real-time. Poor visibility into migration costs makes it difficult for engineers to see the effects of their architectural choices, resulting in costly configurations.

Whichever AWS migration strategy you choose will have a cost impact. Yet, you don't want to make non-ideal decisions after moving because you invested too much upfront. The sunk cost fallacy is real.

CloudZero's Migration Cost Monitoring empowers you to monitor costs while you track migration progress in real-time. You can also track how your migration costs have changed over time. By doing so, you can catch trending costs before you overspend.

Additionally, CloudZero's MAP Dashboard helps AWS MAP customers to track credits and tagging - in order to maximize discounts and understand savings.

CloudZero also alerts your team to unexpected costs via Slack so they can prevent migration costs from spiraling out of control. They can use these insights to identify which engineering decisions trigger overspending on cloud services and which ones result in cost-effective solutions.

to see how CloudZero can help you migrate to AWS with cost confidence - without sacrificing engineering velocity.

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7 AWS Migration Strategies That Can Help Prevent Overspending

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Many companies don't know where to begin when migrating to AWS. Some worry their data will leak, while others don't know the most efficient migration strategy for AWS. Another group worries about overspending when moving to AWS. The migration strategy involved plays a crucial part in all of these concerns.

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Image Source
Amazon Web Services (AWS) provides cloud computing services, which can enable cost savings while providing access to high availability, disaster recovery capabilities, and enterprise-grade infrastructure and security. However, to fully leverage the power of AWS resources, you need to pre-design your migration process.

This article explains how to design a five phase AWS migration process that includes migration preparation, discovery and planning, designing, migrating, and validating applications, and managing operations.
Cost savings
Many companies are choosing to or have already moved to the cloud. While the reasoning for every decision differs, there are a few common benefits that most AWS migrants are seeking to gain.

By outsourcing the purchasing, management, and maintenance of hardware, organizations can drastically cut CapEx. Not having to invest in physical resources enables you to use services as needed and reduces technical debt created by hardware purchases.
Access to high availability and disaster recovery
AWS offers a pay-for-use model for many of its services. Some services also include discounts for contracts or for choosing lower performance options. This flexibility enables you to use resources as needed and to adapt usage to budget constraints. It also enables you to freely scale to match current workload demands, rather than being stuck with underutilized resources.
Enterprise-grade infrastructure and security
Cloud resources can provide access to high availability and disaster recovery that on-premise resources typically can't. The distributed nature of data and resources in the cloud along with service level agreements ensure that your data and applications are continually available. Additionally, automatic data replication and the ability to create secondary, remote resources for failover helps eliminate single points of failure. It also ensures that you can quickly and easily restore data when needed.

The level of expertise, infrastructure, and support you get from AWS services is hard to match on-premises. The company has purchasing power and staffing that you are unlikely to have and can provide access at a significantly lower cost than you could achieve on your own. Additionally, AWS services incorporate security expertise and management for your infrastructure. This reduces your security responsibilities and provides you with access to high-level tooling.
Phase 1: migration preparation
There are 5 main phases carried out for each migration to AWS. While these phases vary by organization, the basic purpose remains the same and can serve as a guideline for planning your migration.

The first phase of any migration should involve developing a clear picture of your current operations, business goals, and expectations for migration. You need to ensure that your expectations are realistic and that migration supports your broader goals.
Phase 2: discovery and planning
This is the time to be realistic about budgeting, shareholder perspectives, and feasibility of migration. Phase 1 is also a time to take stock of what resources you have in-house to carry out migration vs which you need to outsource. For example, through a managed migration provider.

Once you have determined that migration is the right choice for you, you can begin creating an explicit migration plan. To do this, you need to create an inventory of your current infrastructure, configurations, and assets. Determine how resources are currently being used and what requirements exist and need to be accounted for.
Phase 3 and 4: designing, migrating, and validating applications
Multiple AWS migration services can help you with this stage. These services can help you evaluate data and applications and provide feedback on migration readiness. Services can also provide recommendations for how to migrate assets or how to configure cloud resources to best suit those assets.

Phase 3 and 4 may be performed as distinct phases or may be combined, depending on your migration strategy. For example, if you plan to perform your migration in stages, each stage you complete should go through both phases before the next stage is started. This helps ensure that applications and data are not left exposed and helps identify issues in your migration strategy early on.

Commonly, organizations start by lifting and shifting less critical applications and data. Lift and shift is the easiest migration strategy and can provide a good testing ground for your plan.
Phase 5: operation
Then, once applications are in the cloud, teams may return to applications and begin refactoring or architecting application code to make applications more cloud friendly. When this is done, you need to revalidate your applications and may need to redesign your deployment to adapt to new requirements.

Once your applications and data are moved to the cloud and have been thoroughly tested, you are ready to move to production. To accomplish this, you need to shift any remaining workloads over to your cloud resources and begin shutting down on-premise operations.

After your migration you also need to carefully monitor your resources and workloads. This is the time when you should be focused on identifying misconfigurations or performance issues and applying corrections.
Consider cleaning house
When migrating to AWS there are a few best practices you can apply to help ensure that you are getting the greatest gain for your efforts. Below are a few to start with.

When inventorying your assets in the planning phase you are likely to come across data and applications that are no longer useful. Rather than moving these assets and moving on, consider whether you can get rid of them.
Prioritize your migration
Eliminating data before migration reduces the total resources needed to migrate and can help reduce your data liability. Retiring legacy applications can reduce your licensing costs and provide a good opportunity to upgrade to newer technologies. For example, those that are better able to take advantage of cloud benefits.

Migrations can cause significant disruption to your productivity and revenue if performed carelessly. For example, moving large amounts of data in the middle of a workday puts a strain on your bandwidth and can limit access to your services.
Pay attention to security
To minimize disruption, try to plan your migratory actions for off-hours. Migrate assets in smaller chunks and check each chunk to ensure that migration went smoothly and to gain feedback for improvements. Additionally, focus your migration on those assets that can provide the greatest benefit once moved. This can help you cut on-premise costs and reassure your stakeholders that migration is worth its budget lines.

AWS uses a shared security responsibility approach that many users misunderstand. To avoid putting your data and systems at risk, you need to take time to ensure that you know what aspects of security you are responsible for. You also need to make sure that you are effectively applying security measures and configurations to meet those responsibilities.

In particular, make sure to review the access controls and permissions that you have set in place. One of the biggest mistakes in cloud security comes from misconfigured access controls that leave storage resources open to the public.

When performing these checks, you might find it helpful to use tools like Amazon Inspector or AWS Security Hub. These tools can provide security recommendations based on your configurations.

Before migrating to the AWS cloud, you should design a migration pipeline that takes into account existing infrastructure builds, target cloud configurations, compatibility issues, and company future goals and needs. You should prepare for failures by setting up a backup and disaster recovery strategy. During the migration phase and during the initial setting up phase, you should continuously monitor workloads to prevent data loss and downtime.

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Image Source Amazon Web Services (AWS) provides cloud computing services, which can enable cost savings while providing access to high availability, disaster recovery capabilities, and enterprise-grade infrastructure and security. However, to fully leverage the power of AWS resources, you need to pre-design your migration process.

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Irrespective of the business, organizations always experience competition. Hence staying updated with the market needs, becomes a must, and 'time' becomes an integral constituent. What if there was a way business could focus on their business goals and outsource their maintenance and monitoring tasks somewhere else. Would that help save time & meet the market needs with more efficiency? Migrating to cloud lets you do exactly the same. This AWS Migration article would walk you through all the necessary pointers that you need to consider before you plan to migrate to Cloud. Learn all about the Amazon Web Services with the AWS Online Training.

For starters, let me define Migration for you:

'Moving your data from an on-premise data center to Cloud is called Migration'.

Before we jump in, do check out the important AWS topics that are required to master AWS. Let's begin by understanding the need for Migration.

Need for Migration

Business is no easy task when it comes to handling situations like security, scaling up or down, etc. Let's look at a few scenarios where AWS Migration could be a better resort.

1. Your project has started receiving a high volume of traffic overnight

2. Your clients want fast application implementation and deployment

3. It's becoming expensive to manage the growing database needs

4. You are cautious about the mishap of data center going down

If you Migrate to Cloud then the problems mentioned above will get handled automatically. Let's move further and understand what is Migration.

What is Migration?

Migrating your project means moving your data from the on-premise data center to cloud. FYI we are not referring to clouds in the sky. In this case, cloud is the virtualization used over a data center to make the functionalities more flexible. Many companies like GoDaddy, Expedia etc., have recently moved their business to cloud. Having defined Migration, let me tell you where, how, and who is going to help you migrate your data. The implementation is provided by Amazon Web Services (AWS). So, let's find out what AWS is?

You can learn more here: What is Cloud computing?

Again, Migration is a big task and AWS facilitates Migration in phases. So, let me walk you through the different phases of Data Migration.

Data Migration seems an easy process because in layman's term, it means moving your data from one location to the other. However, it is more complex as the process involves different phases. Let me now talk about the various phases of Migration:

Phase 1: Discovery - Apps which can be moved to Cloud?

There are times you need not require to move your entire business to the cloud.This is where segregation is important. You need to identify the applications which can be Migrated and which cannot. This is what the first phase is all about. Now, l et's go to Phase 2 i.e. choosing the method for AWS Migration.

Depending on the data, AWS provides different ways to Migrate your application e.g. AWS Snowball, AWS Snowmobile, AWS Direct Connect, etc. Once you have chosen an appropriate way to move your data, also look for the resources you'll need for it. Let's now explore the different ways of storing data on AWS Cloud in Phase 3.

Phase 3: Proof of Concept (POC) for AWS Storage

Once you know how and what you are migrating, next, you have to figure out how and where you will store it. The entire motive of moving to AWS is to minimize expenses. In this phase, you'll test your workload and understand about AWS Storage Service, their benefits, limitations, and the necessary security controls.

Now that you have all the pre-requisites like the blueprint, Migration tools, list of assignments, backups and its synchronization with your on-premises data repositories. You can finally migrate your project to AWS Cloud. Once you have Migrated your project to cloud, reliability, and durability are the added benefits you get. Let's see the changes AWS brings to your architecture in Phase 5.

Phase 5: Enterprise Cloud Operations

At this point, you've already migrated to AWS, and AWS will bring updates that you'll need to incorporate in your existing architecture. Hence, you must ensure that you have a 24×7 support team keeping track of system maintenance and upgrades after the Migration.

So, this was about the different phases of AWS Migration and how to implement it. L et's explore the strategies for AWS Migration .

Application Migration Strategies 'The 6 R's'

The complexity of migrating existing applications varies, depending on the architecture, Amazon came up with different strategies which they commonly termed as 6 R's. Let's look into each of them:

1. Rehost:- You have your application ready and working then you can simply Rehost it on AWS. Also referred to "Lift and Shift". You lift your services and applications from your hosting environment and shift them to cloud using a third party exporting tool.

2. Replatform:- You have an outdated version of your application running on your hosting environment so you have to modify your application and then Rehost it. Replatform is a modification of "Lift and Shift". It involves optimizing the cloud architecture to achieve the benefits without changing the core architecture of the application.

3. There would be certain applications that won't be compatible with the new architecture. In that case, you need to purchase a new application for the new architecture. AWS Marketplace provides a wide range of services that too with a "Pay as you Use" model. Repurchase:-Repurchase is also referred to as "drop and shop" where you upgrade, ease the implementation and accept the new architecture and make changes to the existing model.

4. Refactor:- You want to add up new features, scale up the limits of the existing business model and performance that are difficult with the existing environment. You reconsider your needs, though the solution is a bit expensive. Improving business by moving to a service-oriented architecture (SOA) will benefit your business in the longer run.

5. After Retire:- AWS Migration you can differentiate between useful and useless resources. Hence, you cut off all the resources that are no longer useful to the business and build a strategy around the new resources. This will cut down the extra cost. With lesser things to worry about, now you can focus on maintaining the resources used by the new business model.

6. Retain:- As you know, the sections of your project you need to migrate. You can simply use any of the above-mentioned strategies. Then, build a strategy to retain those applications, which, according to your business model are yet not ready to be migrated to the cloud or the applications that were upgraded recently.

We saw the different strategies, together known as 6 R's, one should choose wisely while AWS Migration. Now let's see the bigger picture that lies after implementing AWS Migration.

AWS Migration gives your organization limitless benefits. Let's look into the major ones in brief.

1. Elasticity:- Adding and Removing capacity whenever it is needed is the greatest benefits of elasticity.

2. Disaster Recovery:- With a 99.95% guaranteed uptime, businesses can be confident knowing that their data will always be available.

3. Enhanced Cost Management:- The IaaS platform provides two major benefits. First, an IaaS such as Amazon Web Services is available as a monthly service. Secondly, it eliminates the need to continue to purchase and maintain physical hardware.

These were the benefits of AWS Migration. Let's jump into the services offered by AWS to ease the process of Migration.

Out of the many tools provided by Amazon to automate data migration, I'll be talking about the more commonly used ones.

AWS Migration hub: AWS p rovides a single location for tracking Migration process. Migration Hub gives you the freedom to choose the Migration partner and tools that fit your needs.

AWS Server Migration service (SMS): on-premise workload to AWS easier and faster. It allows you to automate Migration and track replication of Server. It makes coordinating with your large scale-server Migration easy. AWS SMS is an agentless service that helps migrate loads of

This makes the transfer of files over long range to AWS S3 bucket faster and secure.

: AWS Snowball It is a petabyte-scale data transfer solution that uses secure devices to transfer a large amount of data in and out of AWS.

AWS Snowmobile : It is an exabyte scale data transfer solution to move an extremely large amount of data to AWS. Snowmobile makes the transfer of massive volumes of data easier.

Amazon Kinesis Firehose: streaming data into Amazon S3. You can analyze real-time data to get timely insights of Migration. It is the easiest out of all the methods. It can capture and automatically load

Now that you know everything about AWS, and AWS Migration, let me show you a use case where you will be migrating a Virtual OS from my local machine to AWS Cloud.

Demo: Implementing Migration using Import/ Export method

You will be migrating an on-premise Virtual OS running on VMWare to AWS using Import/Export (AWS Direct Connect) method.

1. Create a .vmdk export file for Ubuntu 14.04.

2. Download & configure AWS CLI.

Now click on "Add User".

Now give Administrator access.

Click on Create User.

4. Create an S3 bucket and add file(image file of the OS).

Select a unique Username.

Review and Create Bucket.

Add the exported .vmdk file.

Wait till the image reflect on the list.

5. You can upload the file using AWS CLI also.

6. Once the file is uploaded, create an AMI for the imported image file.

Your image is now available as an AMI.

7. You can run the AMI created in two ways:-
7 (a). Using CMDER :
Copy the connection string and paste it to the CMDER Console, it will take few minutes to connect and then will open your Ubuntu 14.04.

7 (b). Using Putty :
Configure the .pem file to your Putty and provide the username and the connection string. It will show initializing and few minutes later you will land on to Ubuntu 14.04.

In this way, we have successfully migrated a virtual OS on AWS. I hope you enjoyed reading this AWS Migration article.

If you want the source code to configure AWS CLI, please comment below.

If you wish to learn AWS Migration and migrate your own applications, then check out our Migrating Applications to AWS Training which comes with instructor-led live training and real-life project experience. This training will help you understand Migration in depth and help you achieve mastery over the subject.

Got a question for us? Please mention it in the comments section of "AWS Migration" and we will get back to you.

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AWS Migration: Migrating An On-Premise Application To Cloud | Edureka

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21.3K Views Irrespective of the business, organizations always experience competition. Hence staying updated with the market needs, becomes a must, and 'time' becomes an integral constituent. What if there was a way business could focus on their business goals and outsource their maintenance and monitoring tasks somewhere else.

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03 Mar 2023

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