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Software engineering
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=== Maintenance === {{Main|Software maintenance}} [[Software maintenance]] refers to supporting the software after release. It may include but is not limited to: [[Patch (computing)|error correction]], optimization, deletion of [[Software bloat|unused]] and discarded features, and enhancement of existing features.<ref name="BoDu04"/><ref name=swebokVol3/> Usually, maintenance takes up 40% to 80% of project cost.<ref>{{Cite web|title=What is Software Maintenance? Definition of Software Maintenance, Software Maintenance Meaning|url=https://economictimes.indiatimes.com/definition/software-maintenance|access-date=2021-05-06|website=The Economic Times}}</ref>
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