Seven Key Phases of SDLC: Benefits, Importance and More

The reality for many developers is the need to wait months or years to see code changes make it out to users, coupled with a lack of visibility, communication, and collaboration during the process. Organizations and teams that have the capability to deploy on-demand and in a self-service fashion empower their teams to continue doing their best work. In this phase of work, a software implementation is packaged and tested to assure quality.

stages of the sdlc

The incremental approach creates a fully functional feature with each increment. Agile, on the other hand, is a hybrid approach that incorporates elements from both approaches. You build a small portion of each feature one at a time during each Agile sprint, and then gradually add functionality and new features over time. From Tech Consulting, End-to-End Product Development to IT Outsourcing Services! Since 2009, Savvycom has been harnessing the power of Digital Technologies that support business’ growth across the variety of industries. We can help you to build high-quality software solutions and products as well as deliver a wide range of related professional services.

Systems development life cycle

What’s more, the SDLC optimizes strategy by dividing the main business goal into smaller, easier to achieve units. However, regardless of the model you pick, there are a lot of tools and solutions, like Stackify’s Retrace tool, to assist you every step of the way. In short, we want to verify if the code meets the defined requirements. ” This stage of the SDLC means getting input from all stakeholders, including customers, salespeople, industry experts, and programmers. Learn the strengths and weaknesses of the current system with improvement as the goal. Today, we have the DevOps Life Cycle, representing the SDLC and our goals to continuously deliver software value as a cross-functional team.

The SDLC aims to produce a high-quality software that meets or exceeds customer expectations, reaches completion within times and cost estimates. In this third phase, the system and software design documents are prepared as per the requirement specification document. Requirements Gathering stage need teams to get detailed and precise requirements. This helps companies to finalize the necessary timeline to finish the work of that system. There are a few key differences between them, despite their similarity.

System Analysis and Requirements

Suppose you have a small project with relatively precise (and static) requirements and scope. Instead of risking following a plan only to discover flaws at the end, it gives you plenty of opportunities to test along the way. In this guide, we’ll provide an overview of the software development life cycle (SDLC) and its seven phases, as well as a comparison of the most popular SDLC models. Hence, the Agile SDLC model has recently become increasingly popular and in demand. This demand can be primarily linked to the agile model’s flexibility and core principles. So rather than creating a timeline for the project, agile breaks the project into individual deliverable ‘time-boxed’ pieces called sprints.

stages of the sdlc

They also need to use programming tools like compiler, interpreters, debugger to generate and implement the code. Agile is all about moving quickly, releasing frequently, and responding to the genuine demands of your users, even if it contradicts your initial strategy. This means you don’t need complete requirements and a detailed SOW before beginning work.

Predominant Models of SDLC (Software Development Life Cycle)

An SDLC defines a sequence of activities during software creation, whereas STLC (Software Testing Life Cycle) refers to a step-by-step list of activities required for reliable software testing. The V-shaped model (also known as the Verification and Validation stages of the sdlc Model) requires the team to run coding and testing tasks in parallel. All three of these methods are popular since they allow for extensive iteration and bug testing before a product is integrated with greater source code or delivered to market.

  • This process goes on until the software is stable, bug-free and working according to the business requirements of that system.
  • Businesses can only take advantage of SDLC when the plan is meticulously followed.
  • Once the software testing phase is over and no bugs or errors left in the system then the final deployment process starts.
  • This SDLC model can be useful, provided your project has no unknown requirements.
  • This methodology saves developers the risk of spending months or even years on a process that ends up failing because of a small mistake at an early stage.
  • As the information technology sphere continues to evolve, the SDLC has been changed to keep up with the ever-changing demands in system development.

The life cycle defines a methodology for improving the quality of software and the overall development process. Even more rigid is the related Verification and Validation model — or V-shaped model. This linear development methodology sprang from the Waterfall approach. It’s characterized by a corresponding testing phase for each development stage. Like Waterfall, each stage begins only after the previous one has ended.

Learn More from Emergent Software

The systems development life cycle originally consisted of five stages instead of seven. This includes all the specifications for software, hardware, and network requirements for the system they plan to build. This will prevent them from overdrawing funding or resources when working at the same place as other development teams. SDLC is a process followed for a software project, within a software organization. It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software.

The software system is either released for users to install on their own machine or deployed to production servers. This phase concentrates on communicating with the users/end users to gather the requirements and to capture information regarding a user’s needs. The product manager, at this stage, defines and documents the scope of the project in a document called a business case. The agile model allows for more frequent changes while developing a project. It focuses on providing flexibility and adaptivity while creating software. It bases on ongoing release cycles, and each iteration includes testing the product.

What Practices Will Help You Mitigate Risks?

There are 7 software development life cycle phases, and they are to be approached sequentially, although in some cases, two might run concurrently (just as development and testing). Companies are under more pressure than ever to deliver high-quality products in often unrealistically short time frames. In such a market, approaching software creation in any way that does not involve a pre-defined SDLC is not a business-wise move. Start building your development around a strict Software Development Life Cycle and stay a step ahead of competitors still relying on an old-school approach to product design.

stages of the sdlc

They may present more than one design approach, and these ideas are documented in a Design Document Specification (DDS). The big bang model is a high-risk SDLC type that throws most of its resources at development without requiring an in-depth analysis at the start of the cycle. The agile approach requires the team to perform testing at the end of each sprint to ensure no potential exploits end up in production. Each iteration goes through verification and requires either user or stakeholder feedback. The last iteration deploys a product version that went through rigorous testing and meets all the requirements specified in the DDS.

Software development

Testers then perform Software Testing Life Cycle activities to monitor the system for bugs, and defects. This is done to check the correspondence between the real and expected behavior of a program. As it has been mentioned, the number of SDLC phases may vary according to the applied methodology and the preferences of the development team or company.


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