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Yes, you can just write a pulsar function to move write the messages from the input topic to the output topic. You can multiple functions with different input topic and output topic. If you will have many functions to move messages, you might don’t want to involving the function services. https://functionmesh.io/ provides a capability to deploy functions on native k8s cluster. And, if you want to continue to simplify the user experience. there is another idea to build a sql layer based on pulsar functions, here is an example https://docs.streamnative.io/docs/pfsql-get-started. I think your case is something without router, filter, transformer. Just write sql to migrate the messages.