Once the requirement analysis phase is completed the next step is to define and document software needs. This process conducted with the help of 'Software Requirement Specification' document also known as 'SRS' document. It includes everything which should be designed and developed during the project life cycle.

In this third phase, the system and software design documents are prepared as per the requirement specification document. This helps define overall system architecture.This design phase serves as input for the next phase of the model.

Once the system design phase is over, the next phase is coding. In this phase, developers start build the entire system by writing code using the chosen programming language. In the coding phase, tasks are divided into units or modules and assigned to the various developers. It is the longest phase of the Software Development Life Cycle process.

Once the software is complete, and it is deployed in the testing environment. The testing team starts testing the functionality of the entire system. This is done to verify that the entire application works according to the customer requirement.

Once the software testing phase is over and no bugs or errors left in the system then the final deployment process starts. Based on the feedback given by the project manager, the final software is released and checked for deployment issues if any.

Once the system is deployed, and customers start using the developed system, following 3 activities occur Bug fixing - bugs are reported because of some scenarios which are not tested at all Upgrade - Upgrading the application to the newer versions of the Software Enhancement - Adding some new features into the existing software The main focus of this Agile phase is to ensure that needs continue to be met and that the system continues to perform as per the specification mentioned in the first phase.