Systems development life cycle Wikipedia

At the end of a sprint, the product owner verifies the code and greenlights its deployment to users. The team then gathers feedback and starts preparing for the next sprint. While every SDLC is unique, all life cycles go through similar steps. Let’s take a close look at every typical phase of an average software development life cycle. Each SDLC model offers a unique process for your team’s various project challenges. The project’s specifications and intended results significantly influence which model to use.

what is software life cycle model

The first step in waterfall is gathering all the customer requirements up front. This is the only stage that involves customers until the software is delivered. If you want to improve the quality of your software products, using Micro Focus ValueEdge is the first step.


SDLC is used to give a rigid structure and framework to define the phases and steps involved in the development of a system. Design the proposed software.The design phase turns the software specifications into a design plan. Plans are laid out concerning the architecture, hardware, operating systems, programming, communications and security software life cycle model issues. An important goal of the SDLC is to quickly and efficiently produce high-quality software in a series of phases that are calledsteps. The number of steps in an SDLC will vary depending on the business and its software product goals. For example, at the most basic level, software is designed, developed, tested and then released.

what is software life cycle model

Developers must follow the coding guidelines defined by their organization and programming tools like compilers, interpreters, debuggers, etc. are used to generate the code. Different high level programming languages such as C, C++, Pascal, Java and PHP are used for coding. The programming language is chosen with respect to the type of software being developed. 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. Software development is a cumbersome activity requiring proper identification of requirements, their implementation, and software deployment.

What Is SDLC and Why is It so Important for Your IT Project?

Conventional programming tools like compilers, interpreters, debuggers, etc. are also put into use at this stage. Some popular languages like C/C++, Python, Java, etc. are put into use as per the software regulations. Software Development is the development of software for distinct purposes. For software development, there is a specific programming language like Java, Python, C/C++, etc.

For Example, A client wants to have an application which concerns money transactions. In this method, the requirement has to be precise like what kind of operations will be done, how it will be done, in which currency it will be done, etc. Red Teaming- Ensure your network, physical, and social attack surfaces are secure.

Stage 6: Deployment in the Market and Maintenance

Security consciousness — Given the rise in cybercrime, most software teams now take a security-first approach to software development. Everyone on the team must think about security and data privacy when making even the most seemingly minor changes. Each phase of the project involves business modeling, analysis and design, implementation, testing, and deployment. The Software Development Life Cycle is a process used by software development organizations to plan, design, develop, test, deploy, and maintain software applications.

What is the Software Development Life Cycle Model (SDLC)? – The Tech Edvocate

What is the Software Development Life Cycle Model (SDLC)?.

Posted: Thu, 11 May 2023 05:59:07 GMT [source]

After that, the SDLC continues with post-launch maintenance, including software updates and support. Waterfall and Agile are the two most common methods applied in software development, although many companies incline towards Agile nowadays, given the ever-evolving needs of the market. The benefit of this approach is that product owners can see the results of each short cycle, provide their feedback, and make corrections if needed. At the beginning of the next cycle, software developers revise the previous version of the product and present it for the next round of feedback. As such, the Agile software development life cycle is known as a continuous process. Models allow you to effectively plan and follow a software development process step-by-step, making it as predictable as possible.

Software Deployment

This model uses many of the same phases as the waterfall model, in essentially the same order, separated by planning, risk assessment, and the building of prototypes and simulations. At the deployment stage of a software development life cycle, a finished product is rolled out in a production environment. It is either released to be downloaded by end-users or installed on the client’s premises and prepared to start running there. The design phase of a system development life cycle is all about visualization. A system architect describes how all product components will interact with each other, defines security levels, and outlines the way the data will be transmitted. At the same time, UI and UX designers translate a product idea into schemes, layouts, and wireframes.

  • This process is required to define whether new features don’t conflict with those that were developed before.
  • The waterfall model can also be used in small development teams.
  • Everyone on the team must think about security and data privacy when making even the most seemingly minor changes.
  • The best method for ensuring that all tests are run regularly and reliably, is to implement automated testing.
  • This typically includes resource allocation, capacity planning, project scheduling, cost estimation, and provisioning.

Related information and infrastructure must be repurposed, archived, discarded, or destroyed, while appropriately protecting security. Conduct with a preliminary analysis, consider alternative solutions, estimate costs and benefits, and submit a preliminary plan with recommendations. Having a clear view of an entire project, workers involved, estimated costs and timelines. This step provides insight into the strengths and weaknesses of the current software and what can be implemented in the new software. The main focus of this SDLC phase is to ensure that needs continue to be met and that the system continues to perform as per the specification mentioned in the first phase. This stage gives a clearer picture of the scope of the entire project and the anticipated issues, opportunities, and directives which triggered the project.


The software development life cycle phases mentioned above are also referred to as milestones. A careful evaluation is conducted upon the completion of each milestone and strategic decisions made as to the project’s continuation. Some software development life cycle methods also include the seventh step – maintenance. As its name suggests, this methodology is graphically presented as a cascading set of steps and actually works as a pipeline for software development. Due to such lack of flexibility, this SDLC results in a lot of waste and rework, so it is rarely used in modern IT companies.

what is software life cycle model

Now it’s time to release the software to the production environment. This means the product will be generally available for customers to buy and use. This is the stage where the engineering team actually codes the product. At this stage, the development team translates the high-level overview communicated in the roadmap into a tactical set of assignments, due dates, and day-to-day work schedules. In this third phase, the system and software design documents are prepared as per the requirement specification document.

Project initiation

The result of this phase is a working software product and a Source Code Document. Software development process is effective for projects that contain many complex requirements and risk analysis is necessary to understand whether these requirements are adequate. Also, the spiral model is used for projects that are devoted to development of a new product line, and getting customer feedback is needed at different stages of a release.

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