The V model contains several phases of verification, where the requirements are clearly identified, the program architecture is designed, and then the design is implemented with coding. The validation phases of this model contain the tests designed for each verification step. The different tests used in this model are: acceptance tests, system tests, integration tests and unit tests. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay The first phase included in the verification part is the requirements analysis where the product requirements are understood from the customer's point of view. It is very important that this phase includes detailed communication with the client to understand their exact expectations and requirements. Indeed, most of the time, the customer does not know exactly what he wants. Acceptance test design planning is done at this stage because these requirements can be used as input for initial testing. Acceptance testing is used to show compatibility issues with other systems available to the user. The next stages of verification are the design stages, which include system design, architectural design, and module design. These steps occur after requirements definition and include the design of the entire system. The system design includes all hardware and communications configuration required for the product. A system test plan is developed based on the chosen design. System testing is used to check the functionality of the entire system and the communication of the system with external systems. Additionally, the product architecture is designed. Usually, several approaches are chosen for the design, but this depends on the financial and technical feasibility of the product. High-level design refers to the general design of the entire system which is broken down into modules, each with its own functions. Integration tests are performed to test the communication of the internal modules of the system. On the other hand, low-level design is the detailed internal design of each of the system modules. The design must be compatible with the modules of the system architecture, but also with external systems. To reduce errors and defects in the design, unit tests can be designed at this stage based on the internal designs of the modules. Unit testing refers to code-level testing and helps eliminate bugs at an early stage. Keep in mind: this is just a sample. Get a personalized article from our expert writers now. Get a Custom Essay After this, the actual coding of the application is developed and the most suitable programming language for the system and requirements is chosen. The code is written to meet the requirements provided. the code is checked multiple times to see how they could optimize it to make it more efficient.