Changover Methods by C Gahan https://padlet.com/cgahan5311/qy3r76jjuthegz6d en-us 2022-10-17 13:50:11 UTC 2026-02-27 12:13:04 UTC hello@padlet.com An organisation will stop using the old system one day and start using the new one the next cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343253730 2022-10-17 13:50:27 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343253730 PARALLEL cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343254283 2022-10-17 13:50:43 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343254283 DIRECT cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343254703 2022-10-17 13:50:56 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343254703 PHASED cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343255179 2022-10-17 13:51:09 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343255179 PILOT cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343256045 2022-10-17 13:51:31 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343256045 Major advantage that no time is wasted running two systems cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343256813 2022-10-17 13:51:55 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343256813 This is the riskiest type of changeover cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343257253 2022-10-17 13:52:08 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343257253 If something goes wrong, reverting back to the old system usually is impossible cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343257631 2022-10-17 13:52:19 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343257631 This is the cheapest type of changeover cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343257855 2022-10-17 13:52:25 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343257855 normal business transactions could be seriously disrupted if the new system is found to have bugs cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343258240 2022-10-17 13:52:37 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343258240 This allows the new system to be assessed before it is rolled out to the whole organisation cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343258869 2022-10-17 13:52:55 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343258869 The new system may be deemed a failure with minimal risk to the majority of the business cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343259117 2022-10-17 13:53:03 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343259117 This changeover technique allows companies to run the new system on a much smaller scale cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343259502 2022-10-17 13:53:13 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343259502 The new system is tried out at a test site before launching it company-wide cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343259819 2022-10-17 13:53:21 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343259819 After a successful trial, companies usually opt to use the direct technique to launch the system company-wide cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343264668 2022-10-17 13:54:05 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343264668 This takes a long time to complete because phases need to be implemented separately cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343265053 2022-10-17 13:54:16 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343265053 When the new system is deemed to be meeting all requirements, the old system can be dropped. cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343265544 2022-10-17 13:54:30 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343265544 This type of changeover is resource intensive cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343265873 2022-10-17 13:54:37 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343265873 This is the safest type of changeover cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343266080 2022-10-17 13:54:43 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343266080 This type of changeover may be the only option in safety critical systems. cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343266290 2022-10-17 13:54:49 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343266290 A select group of users or organizational subunit changeover to the new system cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343266941 2022-10-17 13:55:07 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343266941 This is a staged method whereby one area of the overall system is changed. cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343267747 2022-10-17 13:55:29 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343267747 The changes in this type of changeover are limited in scope and therefore non-critical cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343268216 2022-10-17 13:55:42 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343268216 Errors in implementing the new system are isolated to the current department. cgahan5311 https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343268873 2022-10-17 13:56:00 UTC https://padlet.com/cgahan5311/qy3r76jjuthegz6d/wish/2343268873