Just like development of a new product within a manufacturing unit goes through a systematic set of procedures, from initialization to disposal, software products also undergo a cycle of tasks, beginning from analysis to disposal. Software engineering teams use the Software Development Life Cycle (SDLC), to analyze, plan, design, code, test and deploy information systems. Software product lifecycle is a complex set of tasks, which ensures that the software product development is completed successfully. There are many tools and applications that assist in the various phases of the software product life cycle. This article gives a brief overview of how SDLC works.

SDLC Activities

The software product lifecycle consists of a series of activities that ensure better management and control during the development of the software application. The beginning of the software product development is a planning and requirement gathering phase, where business analysts engage with various stake-holders to know more about their requirements. Cost benefit analysis is also part of this phase to ensure that the software product adds more value to organizational goals.

Once the requirements of the client are identified, software engineers create a high-level design plan for the software product. The system design document goes through several iterations with inputs from all the stake-holders to become the final software design document. Coding comes next, and thereafter the application goes into the testing phase. The testing phase involves testing for bugs, which are fixed before the product goes into production.

Acceptance and maintenance are part of the SDLC lifecycle to improve the product and come up with enhanced versions.

SDLC Models

The Waterfall model is a cascading methodology that is most widely used as a SDLC model. The Waterfall moves from one phase to another, only after finishing all tasks of the previous phase. Each phase is reviewed at completion to ensure all activities have been check marked and the project is on track.

The V-shaped model progresses from one phase to another sequentially, similar to the Waterfall model. This methodology, however, focuses immensely on testing at the end of each phase. The next phase of the lifecycle begins only after results of the previous are completely validated.

Other models like the Spiral model, Agile, etc. are popular SDLC methods that are widely followed in software organizations.

software product life cycle ensures the timely and successful completion of the deliverable. A project lifecycle management software system automates several activities related to the software development lifecycle.

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