In this phase, you consider modularity as the prime objective. Following the ideas discussed in Section 4.3, “A guide to forming bundles”, you refactor the application into multiple bundles. You may start conservatively with a small number of bundles and then further refactor those bundles.

If the original code is crafted following good software practices such as separation of concerns and use of well-defined interfaces, migration may involve modifying only configuration. In other words, your Java sources will remain unchanged. Even configuration is likely to change only a little.