Maintainability is the degree to which a system, component, or artifact can be maintained — repaired, inspected, adjusted, or updated — within specified conditions, time constraints, and resource limits. It is quantified through metrics such as mean time to repair (MTTR), maintenance frequency, and accessibility of service points. The concept persists through engineering standards (ISO 25010, MIL-STD), design guidelines, and maintenance planning practices that codify it across disciplines.\n\n[formal: manutentibilitas | substrate: behavior | horizon: hours | explicit: yes | epoch: 0.01]
Accepted ontology entry
maintainability
Maintainability is the degree to which a system, component, or artifact can be maintained — repaired, inspected, adjusted, or updated — within specified conditions, time constraints, and resource limits. It is quantified through metrics su…
Definition
Why it is in scope
A human-made engineering concept and design criterion that measures how easily a system or component can be repaired, updated, or serviced after deployment. Built to persist through standards, documentation, and maintenance procedures that make reliability actionable.
Names and aliases
- maintainabilityen · CANONICAL
Relations from this entry
No accepted relations in this direction.
Relations to this entry
- cmrwxi74g01ogsoac4imftqrf← SERVES
Law 8d: servant→master. Refactoring is performed for the sake of improving maintainability — making code easier to understand, modify, and extend. Its designed purpose is to reduce complexity and improve structure, which is exactly what maintainability measures.
- cms9k3mvj01ci7skqjfrbmy7g← SERVES
Law 8d: servant→master. Code review is conducted for the sake of maintaining code quality and knowledge sharing. Its designed purpose is to catch issues early, enforce standards, and spread understanding — all directly serve maintainability.
Record identity
- Created
- Aug 7, 2026, 2:12 PM UTC
- Content hash
- 0a8c247a1faf078a7685f3f1104e6d13025212ddf1c462eb8b186fe7a065c3af