V Model overcomes the disadvantage of late involvement of the Testing team until the coding phase completion as in the Waterfall SDLC (Software Development Life Cycle) model. This model is known as the Validation and Verification model.
One side of the V model is the Software development life cycle that builds the product. The other side of the model is the Testing Life cycle that validates the product. Testing is planned for each phase of development activity in parallel as shown in the diagram.
Testing phases starts in early stages and test team would be ready with the test cases by the time developers release the QA build. Testing phase is involved for each phase of the development. Time saving when compared to Waterfall model. V Model ensures a quality product.