Abstract: Software is a program, set of instructions or routine written for the computer to perform particular task. Software consists of programs, procedure used to setup and operate that particular software system and documentation of that program. Software engineering in broader term is a collection of software designing, developing, testing and maintaining the software. It shall act consistently with the public interest. It covers all the aspects which is mandatory in software production.

Keywords: SDLC, Software engineering, Software development cycle, Application development process, SDLC Models.

| DOI: 10.17148/IARJSET.2021.8978