The changes are implemented in the software system following a software maintenance process, which is known as the software maintenance lifecycle (SMLC). This lifecycle comprises seven phases, namely, problem identification, analysis, design, implementation, system test, acceptance test, and delivery phase. The System Development Lifecycle (SDLC) or the Application Development Lifecycle, for example, is an essential structure in the field of software engineering. The process includes planning, building, testing, and the overall structure of how an information system is developed and maintained.
It originated in the 1960s, when groups of developers came together to find the most efficient way to manage an information system. A systems development lifecycle or SDLC is essentially a project management model. It defines the different stages that are necessary to take a project from its initial idea or conception to implementation and subsequent maintenance. Standard Operating Procedures (Updated): Defines in detail how the Operations %26 Maintenance (O%26M) team will perform business processes related to system operations and maintenance.