I have blogged before about the flex client I have created for the Axon framework addressbook sample project. In this blog item I am describing changes based on a new feature made available in Axon. Allard has created support for a CommandBus and command handlers. Basic idea is that you dispatch items on the bus, and a registeredhandler picks it up and handles it. This makes the command query separation also more clear on the flex side of the application.