What is perfective maintenance ?

Perfective maintenance is one of the four types of software maintenance, with the other three being corrective, adaptive, and preventive maintenance.
Perfective maintenance involves the improvement of a software product by refining its functionality, enhancing its performance, and making the system more user-friendly.
Perfective maintenance does not typically address errors or faults but rather focuses on upgrading the software to meet evolving user requirements and incorporating new or changing customer needs into the software.

Actions included in perfective maintenance could cover:
• Improving the software’s performance or efficiency.
• Refactoring code to improve readability or maintainability.
• Adding new features that users have requested.
• Updating user interfaces to enhance usability.
• Optimizing database performance.
• Altering functions and features to make the software more responsive to user demands.

The goal of perfective maintenance is to ensure that the software continues to satisfy user needs over time and remains useful and competitive in the marketplace.
Perfective maintenance often requires a deep understanding of both the user’s needs and the software architecture to be conducted effectively.