Advantages :

Produce more stable and reliable system

Disadvantages :

Take longer to deliver the system

• Delivers a working system early, allows continuous user feedback, catches errors sooner, and adapts easily to changes.

  
  

  Disadvantages

  • Needs strong planning, can face integration issues, may increase cost/time, and risks scope creep or dependency problems.

    
    

Simple and easy to understand

Easy to manage with clear stages

Good for small projects

❌ Disadvantages

Hard to change requirements later

Customer only sees result at the end

Errors found late �

GeeksforGeeks

• Early Working Versions: Some functional portions of the product are developed quickly, allowing stakeholders to see a "working prototype" early in the lifecycle.

• Easier Risk Management: High-risk features can be prioritized and addressed in early iterations, reducing the chance of catastrophic failures at the end of the project.

Disadvantages of the Iterative Model

• Increased Resource Demands: Frequent cycles and continuous testing often require more human resources and time than a single-pass model.

• Higher Management Overhead: The complexity of managing multiple concurrent iterations and constant feedback loops requires intensive project management.

High User Involvement and Early Error Detection

Disadvantages : Hard to Manage Scope, Documentation and System Architecture

i) Structured and easy to understand

ii) Predictable timeline and budget

iii) Good for small, simple projects

iv) Clear documentation

v) Easy to manage

Disadvantage -

i) Inflexible to changes

ii) Late testing

iii) Poor adaptability

• High Flexibility and Adaptability: Since the project is broken into short cycles, it is very easy to change requirements or pivot the direction of the project mid-way without wasting massive amounts of resources.

• Faster Delivery of Value: Because the team produces a working increment at the end of every sprint, the "time-to-market" is significantly shorter. Users can start using basic features while the rest of the system is still being built.

• Strong Stakeholder Engagement: Agile requires constant communication between the developers and the client. This ensures the final product actually meets the user's needs and reduces the risk of building the "wrong" software.

  
  

  
  

  Disadvantages

• Lack of Predictability: Because requirements are constantly evolving, it can be very difficult to predict the final cost, the exact completion date, or the final scope of the project at the beginning.

• High Demand on Time: Agile requires active participation from both the development team and the stakeholders. Frequent meetings (like daily stand-ups and sprint reviews) can be exhausting or difficult to manage for busy clients.

• Documentation Debt: Since the focus is on "working software over comprehensive documentation," technical documentation often falls behind. This can make it difficult for new team members to understand the system's architecture later on.