The most important activity when conducting a post-implementation review as part of the system development life cycle (SDLC) is to verify that the project objectives are met. The project objectives are the specific and measurable outcomes that the project aims to achieve. By verifying that the project objectives are met, the post-implementation review can evaluate the success and value of the project, and identify the lessons learned and best practices for future projects. Identifying project cost overruns, leveraging an independent review team, and reviewing the project initiation risk matrix are other possible activities, but they are not as important as verifying that the project objectives are met. References = ISACA Certified in Risk and Information Systems Control (CRISC) Certification Exam Question and Answers, question 4; CRISC Review Manual, 6th Edition, page 153.