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  • Writer's pictureAnil Puri

Software Development Lifecycle


The software we use every day, from websites to mobile apps to complex enterprise systems, goes through a rigorous creation process known as the Software Development Lifecycle (SDLC). It is a structured roadmap that ensures software is built to meet user needs, functions smoothly, and avoids costly hiccups.


Here are the 7 key phases of SDLC:

  • Planning: The first phase involves defining the project scope, objectives, and requirements. This is where the foundation of the entire development process is laid. What problem is the software trying to solve? Who are the users?

  • Analysis: In this phase, developers and analysts conduct a detailed analysis of the project requirements. This involves gathering information from stakeholders, identifying potential risks, and creating a comprehensive plan for implementation.

  • Design: The specifications are used by architects and software engineers to create the software architecture and design specifications for components like databases, interfaces, algorithms and coding.

  • Development: With the design in place, developers begin coding the software according to the specifications outlined in the previous stages. This phase requires careful attention to detail and adherence to coding standards to ensure a robust and maintainable codebase, bringing the software to life.

  • Testing: Testing is a critical phase of the SDLC where developers evaluate the software for defects and ensure that it meets the specified requirements. This involves various types of testing, including unit, integration, system and acceptance testing.

  • Deployment: Once the software has been thoroughly tested and approved, it is ready for deployment. This phase involves installing the software on the target environment and making it available to end-users. User training and documentation is provided.

  • Maintenance: The final phase of the SDLC involves maintaining and supporting the software after deployment. This includes fixing bugs, implementing updates, and providing technical support to users.

The SDLC offers several benefits:

  • Reduced Risk: By following a structured approach, developers can identify and address potential issues early on, saving time and money in the long run.

  • Improved Quality: Testing and quality assurance ensure the software meets user needs and performs well.

  • Enhanced Communication: The SDLC fosters clear communication between developers, stakeholders, and end-users, leading to a more successful final product.

While the core stages remain consistent, there are different SDLC methodologies, each with its own strengths. Traditional waterfall models follow a linear progression, while agile methods emphasise flexibility and user feedback throughout development.


By following the Software Development Lifecycle, teams can ensure that projects are completed on time, within budget, and to the satisfaction of stakeholders. This systematic approach helps deliver high-quality software products that meet the needs of end-users.

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