Core Components WWF

Windows Workflow Foundation (WF) is a programming model, engine and tools for defining, building, executing, debugging and managing workflows on Windows.

Core Components:

1. Base Activity Library: Out-of-box activities which provides functionality for control flow, conditions, event handling, state management and invoking web service. One can build their own custom domain-specific activities using the base activity.
2. Runtime Engine: Workflow execution and state management
3. Runtime Services: Hosting flexibility and communication
4. Visual Designer: Graphical and code-based construction

Once a workflow model is compiled, it can be executed inside any Windows process including console applications, Windows Forms applications, Windows Services, ASP.NET Web sites, and Web services.