The process of software development is kick on basically from few ways. They are software prototyping, iterative development, structured techniques and random models. The application development may vary depends on the functional requirement. The development models starts with the development of preliminary data models and business process models using structured techniques.
We follow non-agile and use case models to finalize the application development process however it takes a long routine to finalize. We give the strong base system to handle all the application. I.e. the life of application is extended, grow able, and it also need pirated changes in between process.
Our developers closely work with all the applications and take it into future needs. The testing phase and requirement phase need some changes in the application, it may urgent or normal depends on the place it handles.
In the system development life cycle (SDLC), the changes may occur on the time based. For example an application is developed for an enterprise using visual basic with ms access. But in future it may need to take as a web application.