(Verification and Validation model)
Just like the Waterfall Model, V-shaped life cycle model is based on the direct sequence of steps. The main difference between these methodologies is that testing is planned in parallel with the corresponding development phase. According to this software testing methodology, the process begins when requirements are ready, so we can perform static testing - verification and review, that helps to prevent possible defects on the latest stages. A corresponding test plan is created for each of the software development levels, which determines the expected results as well as entry and exit criteria of the product.
