Definition(s):
“modification of a software product performed after delivery to add functionality or features to enhance the usage of the product.”
“Note 2 to entry: “Additive maintenance” type is distinguished from “perfective maintenance” (3.1.9) type and recognized as a different maintenance type to be able to:
- provide additional new functions or features to improve software usability, performance, maintainability(3.1.6), or other software attributes for the future;
- add functionality or features with relatively large additions or changes on software for improving software attributes after delivery with identified opportunities to negotiate any of additions or changes on maintenance strategy, methods, resources, agreements, or service levels between suppliers and acquirers.”