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Evolution Phase Definition

publish date: 2026/06/22 22:28:17.039799 UTC

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In the evolution and servicing lifecycle model, what characterizes the 'evolution' phase of a software system?

No changes of any kind are permitted to the software

The system is permanently taken out of use and replaced

Only small, essential tactical changes are made to keep the system running

Significant changes are made to the software architecture and functionality

Correct Answer

Significant changes are made to the software architecture and functionality

Explanation

The evolution phase is when significant changes to the software architecture and functionality are made. This typically happens early in a system's life when stakeholders propose and implement many changes to take full advantage of the new software.

Reference

Software Engineering, Ian Sommerville, 10th edition

Quizzes you can take where this question appears

Evolution vs. Servicing - Lifecycle Phases