CXF provides support for multiple data bindings, including JAXB, XML Beans, and Aegis Databinding (2.0.x), is our own databinding library that makes development of code-first web services incredibly easy. Unlike JAXB, you don't need annotations at all. It also works correctly with a variety of datatypes such as Lists, Maps, Dates, etc. right out of the box. If you're building a prototype web services that's really invaluable as it means you have to do very little work to get up and running.