Maintainability

In engineering, maintainability is the ease with which a product can be maintained in order to:

Isolate defects or their cause.
Correct defects or their cause.
Repair or replace faulty or worn-out components without having to replace still working parts.
Prevent unexpected breakdowns.
Maximize a product's useful life.
Maximize efficiency, reliability, and safety.
Meet new requirements.
Make future maintenance easier.
Cope with a changed environment.

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