Understanding the SDLC: Software Development Lifecycle Explained


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Team members participate in a daily scrum (or daily standup) meeting where each person reports on their individual progress. At the end of the sprint, the team demonstrates their potentially shippable increment to stakeholders, conducts a retrospective, and determines actions for the next sprint. Refer to our comparison of continuous delivery, deployment, and integration for an in-depth breakdown of the unique roles these practice play in an SDLC. Most teams rely on automated tests to speed up this phase, but some manual examinations are also valuable (penetration tests are a good example). If you’re hiring for your technology team, Robert Half can help make the process easier. Explore the various hiring solutions we offer and contact us when you’re ready to take the next step.

After training, systems engineers and developers transition the system to its production environment. In systems design, functions and operations are described in detail, including screen layouts, business rules, process diagrams, and other documentation. Modular design reduces complexity and allows the outputs to describe the system as a collection of subsystems. An output artifact does not need to be completely defined to serve as input of object-oriented design; analysis and design may occur in parallel. In practice the results of one activity can feed the other in an iterative process.

Software development process

It draws on Agile and Lean ideas for operations and emphasizes a radical shift in valuing cross-team collaboration throughout development. Organizations may create a Software Engineering Process Group (SEPG), which is the focal point for process improvement. Composed of line practitioners who have varied skills, the group is at the center of the collaborative effort of everyone in the organization who is involved with software engineering process improvement. Once the requirement is understood, the SRS (Software Requirement Specification) document is created.

Software Development Life Cycle

Because the software development lifecycle model requires the development team to complete each phase before moving on to the next, it helps ensure problems don’t become compounded during the process. Using this approach helps teams identify and deal with problems immediately. This minimizes their impact on both the cost of the project and the quality of the final software product that the developers deliver to the market. A life-cycle “model” is sometimes considered a more general term for a category of methodologies and a software development “process” is a particular instance as adopted by a specific organization. [citation needed] For example, many specific software development processes fit the spiral life-cycle model.

Comparisons in Software Development

SDLC strategies have been around since the 1960s, and most of its core concepts have evolved over time. Other methodologies include waterfall, prototyping, iterative and incremental development, spiral development, rapid application development, and extreme programming. With the adoption of faster and newer development life cycles, organizations are moving away from older SDLC models (waterfall, for example).

Software Development Life Cycle

During this stage, the software is subjected to several tests, which include evaluating code quality, conducting unit testing and integration testing, and ensuring security. DevOps follows the lean and agile SDLC methodologies and emphasizes collaboration. Throughout the entire SDLC, developers, IT operations staff, and security teams regularly communicate and work together to ensure successful project delivery.

Why is SDLC Important?

SDLC is a process followed for software building within a software organization. SDLC consists of a precise plan that describes how to develop, maintain, replace, and enhance specific software. The life cycle defines a method for improving the quality of software and the all-around development process.

  • A big bang starts with little planning and quickly moves to the coding stage.
  • Then based on the feedback, the product may be released as it is or with suggested enhancements in the targeting market segment.
  • For this, developers use a specific programming code as per the design in the DDS.
  • Software Development Life Cycle (SDLC) is a process used by the software industry to design, develop and test high quality softwares.
  • Companies with lower maturity or in some highly regulated industries may require manual approvals during this SDLC stage.

This article will explain how SDLC works, dive deeper in each of the phases, and provide you with examples to get a better understanding of each phase.

Stage-2: Defining Requirements

The project team tests the software to ensure it meets the previously discovered needs and requirements and is free of bugs. The testing phase usually involves manual and automated testing of the software’s performance, security, and reliability. The software development life cycle (SDLC) is a series of steps used to develop and maintain software systems. But it’s not limited to creation; it can also be used when changing existing software.

Software Development Life Cycle

After evaluating all the possible factors, the most practical and logical design is chosen for development. Also, make sure you have proper guidelines in place about the code style and practices. Explore the foundational role of software architecture in development, its principles, and impact on project sdlc software success. Kanban boards visualize work items as cards in different states to provides at-a-glance insight into the status of each project and make it easy to identify any bottlenecks. The scrum team decides how to manage its own workload for each sprint based on the backlog shown on a task board.

Software Development Models & Methodologies

Companies with lower maturity or in some highly regulated industries may require manual approvals during this SDLC stage. While time-consuming, prototyping is much less expensive than making radical changes after the development phase. The higher management either signs off on the project or asks the team to go back a step in the SDLC and come up with a new suggestion. If you are considering a transition to DevOps, ensure the team has a firm grasp of SDLC strategies before you introduce radical workflow changes.

Software Development Life Cycle

Kanban, inspired by Japanese manufacturing methods, emphasizes the visual management of work. A Kanban board displays tasks as cards that move across columns, showing the development stages. This real-time visualization pinpoints bottlenecks and optimizes workflow.


After the team has completed a version of the software, they will release it to a testing environment. Here, the QA team and the developers will test all areas of the application to spot any defects, bugs, or other problems. The development team must determine a suitable life cycle model for a particular plan and then observe to it. SRS is the reference for product architects to come out with the best architecture for the product to be developed. Based on the requirements specified in SRS, usually more than one design approach for the product architecture is proposed and documented in a DDS – Design Document Specification. These could include the overall system performance, user experience, new security vulnerabilities, an analysis of bugs or errors in the system.

Software Development Life Cycle

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