One of the key features of Apache CXF is its support for a wide range of protocols and data formats. It supports SOAP 1.1, SOAP 1.2, and the WS-* standards, as well as RESTful services using JAX-RS. It also supports a wide range of data formats, including XML, JSON, and binary formats such as Google Protocol Buffers. Apache CXF provides a powerful set of tools for generating service and client code from WSDL files, as well as for generating WSDL files from code. This makes it easy to create interoperable services and clients that can be consumed by a wide range of platforms and languages.