Software engineering (SE) is the application of a systematic, disciplined, and quantifiable approach to development, operation, and maintenance software, as well as the study of these approaches; that is, the application of engineering to software as it integrates important mathematics, computer science and practices whose origins are in engineering. Developing strong software projects requires a proper process that must be followed by the organization. This software process required for software production differs from company to company. The software life cycle model provides a method for developing a software product. A proper software life cycle model can help an organization not only create a software product, but it also serves as a basis for planning, organizing, staffing, coordinating and directing various other software development activities. The software process is properly written and managed in mature organizations, whereas in immature organizations, no provision is made to write the software process properly. There are different models of software engineering. Their adoptability depends on the project