A service interface is a component of an Enterprise Developer project. For the CICS tutorials, you'll create one Enterprise Developer Solution to contain your CICS IMTK projects – one for each tutorial.
Visual Studio opens the Solution Explorer for the IMTKTutorials solution, showing the IMTKTutorials project. Because each service interface created in a tutorial uses a different enterprise server, and enterprise servers are associated at the project level, each service interface must be in its own project. Therefore, we will not use the default IMTKTutorials project but instead will create a separate project within the IMTKTutorials Solution for each tutorial.