Facets can be thought of as units of functionality that can be added and removed from facet based projects in the workspace.
For more information on facets see the WTP Project Facets documentation.
JAX-WS Tools provides the CXF Facet that performs the following when installed on a Dynamic Web Project:
The CXF Facet has the following facet prerequisites:
The CXF Facet and it's prerequisites are grouped into a project configuration that can be selected when creating a Dynamic Web Project.
Creating a project for CXF Web services