It ensures that the software is secure from initial design to final delivery and can withstand any potential threat. A software life cycle model describes entry and exit criteria for each phase. So without a software software development life cycle definition life cycle model, the entry and exit criteria for a stage cannot be recognized. Without software life cycle models, it becomes tough for software project managers to monitor the progress of the project.

software development life cycle definition

The SDLC can help developers, stakeholders, and users communicate more effectively. This is because the SDLC comprises phases for gathering requirements, designing software, and testing software. These phases allow stakeholders and users to submit feedback, which can assist to improve the software’s quality. This includes compiling requirements, studying user personas, and agreeing on the product’s purpose.

How OpenText ValueEdge can help with SDLC

The Planning phase fosters effective communication and collaboration within the team. By defining clear roles, responsibilities, and expectations, it lays a solid foundation for an efficient software development process. The deployment phase is when the software is deployed to the production environment.

software development life cycle definition

It’s a continuous process of refining and adapting, much like a gardener tending to their garden. The Design phase is the link between the software’s purpose (established in the Planning and Requirements Analysis phases) and its execution (defined in the coding phase). It’s an essential step in creating software that works efficiently and provides an excellent user experience. It outlines the software’s purpose, features, and functionalities, acting as a guide for the development team and providing cost estimates if needed.

Functional TestingFunctional Testing

So rather than creating a timeline for the project, agile breaks the project into individual deliverable ‘time-boxed’ pieces called sprints. This model prioritizes flexibility, adaptability, collaboration, communication, and quality while promoting early and continuous delivery. Ultimately, all this ensures that the final product meets customer needs and can quickly respond to market demands. It then creates the software through the stages of analysis, planning, design, development, testing, and deployment. By anticipating costly mistakes like failing to ask the end-user or client for feedback, SLDC can eliminate redundant rework and after-the-fact fixes.

Let’s examine the seven phases of the software development life cycle, shining light on how a digital product or application journeys from idea to execution. However, the software development lifecycle model also has potential downsides. These drawbacks can particularly affect agile and lean development organizations, but their risks are relevant to any software company using the SDLC framework.


Unit testing, integration testing, system testing, acceptability testing, and other types of testing may be performed. The SDLC is a framework for successfully developing modern software applications, while Agile is a particular development methodology within that framework. The Spiral Model is one of several software development models, which combine elements of iterative and waterfall models. Over time, variations of the framework have been adopted for the development of hardware and software technology products and other complex projects. SRS is the reference for product architects to come out with the best architecture for the product to be developed.

  • After establishing test cases, developers and engineers should rigorously test the software.
  • It is a systematic approach to software development that aids in the creation of software to ensure that it is developed in a consistent and efficient manner.
  • This phase includes writing the code, testing it, and troubleshooting it.
  • Docker allows you to decouple your apps from your infrastructure, allowing you to release software more quickly.
  • The SDLC aims to produce a high-quality software that meets or exceeds customer expectations, reaches completion within times and cost estimates.

If you pay attention to the latest headlines, you’ll see how cyberthreats are wreaking havoc on businesses across the globe. And while software security is becoming a higher priority, for many businesses it’s still an afterthought. At this phase, the software is maintained and issues will need to be resolved. This could include bug fixes, new features, or software updates to reflect changes in the system environment. Fundamentally, SDLC trades flexibility for control by imposing structure. Baselines[clarification needed] are established after four of the five phases of the SDLC, and are critical to the iterative nature of the model.[23] Baselines become milestones.

Software development life cycle phases

Selenium is a popular open-source technology for automating web browsers that is beneficial during the SDLC testing phase. It can be used to assess the functionality, usability, and performance of online applications. The tools can help to improve software development quality, lower expenses, and increase efficiency. The SDLC can help to save money by preventing problems from entering production. This is due to the fact that faults may be spotted and repaired early in the development process before they become issues for consumers. After the team has completed a version of the software, they will release it to a testing environment.

software development life cycle definition

These meticulous assessments uphold high code standards, ensuring the software’s reliability and robustness. This phase also includes preliminary internal testing to confirm the software’s basic functionality. The Coding phase in the Software Development Life Cycle (SDLC) is when engineers and developers get down to business and start converting the software design into tangible code. The project team collects information from stakeholders, including analysts, users, and clients. They conduct interviews, surveys, and focus groups to understand the user’s expectations and needs. The process involves not only asking the right questions but also accurately interpreting the responses.

One big disadvantage here is that it can eat up resources fast if left unchecked. Also, make sure you have proper guidelines in place about the code style and practices. This website provides tutorials with examples, code snippets, and practical insights, making it suitable for both beginners and experienced developers.

The information from this analysis forms the building blocks of a basic project. Thus, in this stage, the basic project is designed with all the available information. Newer approaches to the SDLC have emerged as DevOps, a combination of philosophies and practices that increase an organization’s ability to deliver applications more quickly. As SDLC methods shift more toward a DevOps SDLC, consideration of the role security plays must also be addressed.

Benefits of the SDLC

Prior to the 1950s, computing was not elaborate enough to necessitate a detailed approach like the SDLC. As the complexity and scale of programming grew, the concept of structured programming emerged. Over time, structured programming demanded more tactical development models, thus sparking the beginnings of the SDLC. Want to improve application quality and monitor application performance at every stage of the SDLC?

software development life cycle definition

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