V-Model 

What is V- Model? 

The V-model is known as the validation and verification model. According to the V-model, each stage of the SDLC must be finished before moving on to the next. An improvement on the waterfall model is the V model. In the V-Model, software development and testing are executed in a parallel manner. 

When do you use the V-model for software testing? 

If the requirements are clear and straightforward, the V-model is used for small to medium-sized projects that have requirements that are clearly documented, defined, and fixed. 

The project team is familiar with technology, which is not dynamic. 

The V-model consists of a series of phases that are organized in a sequential manner, with each phase being associated with a corresponding testing activity. The phases of the V-model are as follows: 

1. Requirements analysis: In this phase, the requirements of the software are analyzed and documented. This includes identifying the functional and non-functional requirements of the software, as well as any constraints or limitations. 
2. System design: Based on the requirements identified in the previous phase, a detailed system design is created. This includes defining the system architecture, identifying components and modules, and creating detailed design specifications. 
3. Architecture design: In this phase, the system architecture is designed based on the requirements and the high-level design. The architecture design defines the overall structure of the system and the interfaces between different components. 
4. Module design: In this phase, the detailed design of each module or component is created. This includes defining the functionality, interfaces, data structures, and algorithms. 
5. Implementation: Based on the design created in the previous phases, the software is developed through coding and unit testing. 
6. Integration testing: In this phase, the individual components of the software are integrated and tested to ensure that they work together correctly. 
7. System testing: In this phase, the entire system is tested to ensure that it meets the requirements and works as expected. 
8. User acceptance testing: In this phase, the software is tested by the end-users to ensure that it meets their needs and works as expected in their environment. 
9. Deployment and maintenance: In the final phase, the software is deployed to the production environment and made available to users. The software is then maintained and updated as necessary to fix bugs, add new features, and address any issues that arise over time.