<computer programming> The modification of a software product, after delivery, to correct faults, to improve performance or other attributes, or to adapt the product to a changed environment.

Maintenance is an important part of the software life-cycle. It is expensive in manpower and resources, and one of the aims of software engineering is to reduce its cost.

(01 Feb 1996)

The upkeep of property or equipment.

(12 Dec 1998)