WebService application of the high-level architecture diagram

What WebService is. This question is not very good answer, but I think the following picture can give you a revelation:


As you can see, traditional applications typically manage the various resources of a computer through the operating system layer, and it faces a variety of resources on the computer. And WebService is the face of various resources on the Internet. I believe this picture will give you a clear answer.

There is one more thing to tell you, that is, as a developer should have a deep understanding of what we do in the high-level architecture diagram where the location, which will be more conducive to our study and work.