It is known as Post-implementation Review (PIR). PIR is an assessment and review of the complete working solution. It will be performed after a period of live running, sometimes after the project is completed. The Post-implementation Review is used to evaluate the effectiveness of the system development after the system has been in production for a specific period of time (usually 6 months). It is a free-form report, and not all sections of it are relevant or necessary to the final product. A description of the Post-implementation Review report is always produced.