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Software development lifecycle (SDLC) refers to the structure that is applied to a software product’s development. This is also known as software development process, software lifecycle, and software process. The SDLC is typically known as a subset of the systems development lifecycle. When it comes to SDLC, there are many different models that can be used for the development of the software.

Each model will contain a specific approach to the many tasks that occur during the development process. These models include waterfall, spiral, iterative and incremental, agile, radical application, and code and fix. One commonly used international standard for software development is ISO/IEC 12207; this SDLC has the goal of becoming the only standard for the tasks involved in both the development and maintenance of software.

There are six major tasks that take place in the SDLC. First comes planning; in this step, the developer will extract the requirements of the software and analyze the scope of the development process. Then, the software will reach the implementation state, which refers to the step in which the engineer programs the code. After implementation, the software will be tested to ascertain and repair any defects.

Next, the SDLC moves into the documenting phase, where the internal design of the software will be documented in order to provide maintenance and updates in the future. After the software has been approved and sold or distributed for use, deployment occurs. This can consist of installing, customizing, testing, and evaluating the software. Finally, maintenance and enhancement are the final steps if further issues are discovered.