The Waterfall Model is the base of the development of any Software Solution. In Software Development Life Cycle the software under development always face issues or problems and as a result, the schedule of project disturbs and the development team is not able to manage time and budget. The client will not get the desired product and the company reputation collapse. The main reason for the lack of areas is people are not properly following their work. Tasks are not assigned properly to the team members and they did not work on different areas of the software. Insufficient resources are also the reason for the project delay. The Waterfall Model focuses on how to achieve maximum work efficiency in the development process. It also focusses on how to utilize resources in a better way and minimize the expenses, workers, and time.

 Software Development Model

Different companies use different Software, development models. They also create their models for their development process according to their strategy. The Model has a huge impact on the Testing Process. The testing phase is the most crucial phase which is dependent on the model you select. I will quote a few software development models here. These include waterfall Model, V Model, Incremental Model, Rapid Application Development Model, Build and Fix, Agile, Iterative, Spiral, and Scrum Model. All the models have some advantages and disadvantages. Different Companies applied different Models based on their requirements and the resources or process they have. The Model selection is dependent on Company need.

Waterfall Model

As I discuss, it’s the first Model that to be introduced for the development of Software. Its complexity is almost zero and the model comprise of simple linear steps. This is why it is also known as the linear-sequential Life Cycle Model. As it is a linear approach so the next phase will only develop if the previous one is complete. No overlapping is possible in this model. It is simple and easily applicable to most of the software.

How the Waterfall Model is sequential?

• The first step in the development of any software is requirement gathering. Requirements are gathered from the client by the requirement engineer of the company and documented in the SRS (Software Requirement Specification).
• The next step in the Waterfall is the designing of the software. The overall architecture of the software is developed after analyzing the requirements and checking the need for hardware in the project.
• Right after the design process, implementation starts. The implementation is the detailed development of the software. All the requirements are implemented and dependencies are resolved. Implementation is divided into two parts. In the first part, the developer develops the individual unit of the software, and then in the end they integrate the different modules and make a whole product. Each functionality is tested individually and after the integration of the software.
• As different units develop separately and are integrated, testing is conducted on the software. In this phase, the software is tested extensively. Different test suites are made and all the modules are tested. Post integration testing is conducted to check the failure of the software as a combined product.
• After testing, Software is deployed. This phase is only applicable if all the requirements in the SRS are completed. Software is released in the market or the client environment. Members from the development team will go to the environment in which they have to deploy the product.
• The last phase is the Maintenance Phase. It is the much-needed step. The maintenance request is generated from the client end and the team must have to collaborate with the client. The client checks the software and tells the team for the new change and the development team releases the next phase of the software on the requirement of the client. Few companies agree with the software team to continuously manage the software and resolve the issue timely.

Companies that manage the software after the deployment gain more trust and customer satisfaction.