What is Software Development Life Cycle? and Phases

1. Software Development Life Cycle Phases & Models

2. Software Development Life Cycle The software development life cycle (SDLC) is a process used for structuring the development of any software system, from start through to implementation. This process aims to meet the customer’s demand for a fast turnaround. Understanding the concept of the software development life cycle (SDLC) is a great kick-off point towards planning any IT project.

3. Software Development Life Cycle(SDLC) Phases SDLC is considered to be the foundation for all software development methodologies, with various activities associated with each level. Activities such as budgets, requirements gathering, and documentation writing, are included in the cycle. ● Planning ● Requirements ● Design ● Development ● Testing

5. Planning In the planning phase, project goals are determined and a high-level plan for the intended project is established. Planning is the most fundamental and critical organizational phase. The three primary activities involved within the planning phase are as follows: ● Identification of the system for development ● Feasibility assessment ● Creation of project plan

6. Requirements Discussing the requirements with stakeholders and industry experts is the first step of SDLC. Alternatively, business analysts can use the insights they received from customers. After this stage, everyone should have a clear picture of the scope of the project, budget, resources, and deadline, as well as possible risks and quality assurance requirements.

7. Design In the design phase, we describe the specified features and operations of the system. This phase includes business rules, pseudo-code, screen layouts, and other necessary documentation. The two primary activities involved within the design phase are as follows: ● Designing of IT infrastructure ● Designing the system model

8. Development This phase is actually about the software under development. Following the defined development methodology. The main goal for Software developers, regardless of the picked methodology, is to produce working software as immediately as possible. Business owners should be regularly engaged as well to assure that the software meets their expectations.

9. Testing This phase allows the development team to see whether everything works as intended. This is the vital phase when they detect potential errors and see if the software meets the initial business goals. QA engineers design and carry out test cases and evaluate exit criteria. They create bug reports describing detected defects and report back to the stakeholders on the test findings and therefore the completion status.

11. SDLC Methodologies Agile Model With the Agile model, the whole development process is broken down into small timeboxes that minimize upfront planning. In this time, a cross-functional team works in all directions – planning, analysis, design, coding, and testing. At the end of this iteration, a working product is presented to the stakeholders.

12. Waterfall Model The waterfall is the oldest and most straightforward methodology. It’s all pretty much on the surface: you complete a level, you go to the next one. The waterfall is a methodology that is the easiest to manage, however, it can be prone to delays. Due to its nature, every phase should be reviewed and signed off on before the team can start subsequent one.

13. Other Models Many other SDLC models are essentially a variant of these core processes. Organizations use LEAN manufacturing processes for software development. V-shaped development is a type of Waterfall that implements testing, verification, and validation. Spiral development may pick and choose models for every step within the development process.

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