These change and release management interview questions allow the interviewer to know your grasp of the concept of PIR. Give your answer as detailed and significant as possible. It is referred to as Post-implementation Review (PIR). PIR is an evaluation and examination of the entire operational solution. It will be carried out after a period of live operation, sometimes after the project has been completed. The Post-implementation Review is used to assess the efficacy of system development after it has been in operation for a fixed period. It is a free-form report and not every section is important or required for the final output. There is usually a presentation of the Post-implementation Review report.