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CLF-C02 Practice Question 122: Retire Strategy

AWS Certified Cloud Practitioner (CLF-C02) · Test 13 · question 2 of 10

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During discovery for a large migration, a company finds an internal reporting application that has had no inbound connections in the last 90 days and averages about 2% CPU usage. The business owners confirm that nobody needs it anymore. Which migration strategy should the company apply to this application?

Select one answer
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Answer:

  • A. Retire

Retire is the strategy for applications you want to decommission or archive, which means shutting down the servers in that application stack. AWS lists common signs: there is no business value in keeping the application or moving it, there has been no inbound connection in the last 90 days, or utilization is so low that it counts as a "zombie" application (average CPU and memory usage below 5 percent). Retiring it also removes its hosting and maintenance costs from the migration entirely.

Option B, retain, keeps an application in the source environment, for example because it was recently upgraded or depends on specialized hardware. That still leaves the company paying to run an application no one uses. Option C, rehost, would move the unused application to AWS as it is, so the company would pay to migrate it and keep running it. Option D, repurchase, replaces an application with a different product, such as a SaaS offering, which makes no sense for an application nobody needs.

Reference: About the migration strategies

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