What strategic options do you have for legacy system evolution? When would you replace all parts of a system rather than keeping the software up to date?

Principles of Information Systems (MindTap Course List)
12th Edition
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter12: Systems Development: Investigation, Analysis, And Design
Section: Chapter Questions
Problem 16RQ
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What strategic options do you have for legacy system evolution? When would you replace all parts of a system rather than keeping the software up to date? 

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