The most important parts of software development, requirement gathering or requirement analysis are usually done by the most skilled and experienced software engineers in the organization. After the requirements are gathered from the client, a scope document is created in which the scope of the project is determined and documented
Business analyst and Project Manager set up a meeting with the customer to gather all the information like what the customer wants to build, who will be the end user, what is the purpose of the product. Before building a product a core understanding or knowledge of the product is very important.
In this phase, the requirement gathered in the SRS document is used as an input and software architecture that is used for implementing system development is derived.
Development & Implementation
Implementation starts once the developer gets the Design document. The Software design is translated into source code. All the components of the software are implemented in this phase.
Testing starts once the coding is complete and the modules are released for testing. In this phase, the developed software is tested thoroughly and any defects found are assigned to developers to get them fixed.
Software maintenance is done for future reference. Software improvement and new requirements (change requests) can take longer than the time needed to create the initial development of the software.