https://www.dotnetzone.gr:443/cs/blogs/abekiaris/archive/2011/12/01/you-have-changes-i-have-workflow.aspxWF4 uses a service oriented architecture and as a result any problem can be decoupled into smaller, easily solvable and testable services. XAF uses MVC architecture which, in a sense, is very similar to that used by WF4. We can compare XAF’s controllerselCommunityServer 2.1 SP3 (Build: 20423.1)