Here is probably the shortest available definition: The V-Modell can be described as a derivative of the Waterfall-method; with a major difference: The V-Model requires, that the tests are specified during the development of the architecture, during the design of the software. It's most common in German-speaking countries.

Author

The author is a manager in the software industry with international expertise: Authorized officer at one of the large consulting firms - Responsible for setting up an IT development center at the Bangalore offshore location - Director M&A at a software company in Berlin.