Definition(s):
“degree of effectiveness and efficiency with which a product or system can be modified by the intended
maintainers“.
“NOTE 1 Modifications can include corrections, improvements or adaptation of the software to changes in environment, and in requirements and functional specifications. Modifications include those carried out by specialized support staff, and those carried out by business or operational staff, or end users.”
“NOTE 2 Maintainability includes installation of updates and upgrades.“
“NOTE 3 Maintainability can be interpreted as either an inherent capability of the product or system to facilitate maintenance activities, or the quality in use experienced by the maintainers for the goal of maintaining the product or system“.
(ISO/IEC/IEEE 25010:2011)