# Frequently asked questions
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This section provides answers to commonly raised questions about retiring applications.

## My applications are containerized. Can I still adopt a data-driven approach to migration?
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Yes, by using the port and IP address to distinguish between different containers.

## How long should I run discovery tooling?
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The duration depends on an individual application. Four weeks should be enough. However, for batch applications that run only once a quarter, you’ll need to plan accordingly.