the AxonServer standard edition can run production workloads. It is, however, a single node, so you availability depends on that one node. Also, AxonServer uses memory mapped files, which means that a transaction may be acknowledged to the client, but when the application files after that, the changes might not have been persisted yet. If those restrictions work for you, you won’t need the licensed version.
AxonFramework doesn’t need AxonServer. If you use the Spring Boot Starter, then you can exclude the axonserver-connector dependency.