Perfective Maintenance refers to the process of improving a software system by enhancing its performance, usability, or functionality without altering its core purpose. This type of maintenance focuses on making the system more efficient or user-friendly based on user feedback or changing requirements. The goal of Perfective Maintenance is to ensure that the software continues to meet user needs effectively over time. It may involve adding new features, optimizing existing code, or refining user interfaces, ultimately leading to a better overall experience for users while maintaining system stability.