SDLC Phases a .k.a. Software Development Life Cycle Process

This methodology relies heavily on two foundational credos, including continuous improvement and respect for people. The project manager can easily stick to a budget with a well-structured SDLC plan at hand. Therefore, the project manager can redirect efforts from micromanaging to improving efficiency. In the fifth stage, all the pieces of code are tested to verify and validate a software product. Testers then perform Software Testing Life Cycle activities to monitor the system for bugs, and defects.

  • The product leaves the testing phase and is ready to go into production.
  • An SDLC is a conceptual outline of the software creation process, while Agile is a project management methodology that focuses on a cyclical, iterative progression while building software.
  • In this phase, Developer needs to follow certain predefined coding guidelines.
  • Development Phase in SDLC refers to the actual writing of the program.
  • Each step in an SDLC results in an output (document, diagram, working software, etc.) that acts as the necessary input for the next step.

Agile is an iterative approach that emphasizes collaboration and adaptability, breaking projects into smaller sprints for incremental development and frequent customer feedback. This phase may also involve marketing the new product or feature so people know about its existence and adding release notes. In this phase the software will undergo testing to make sure it’s free of errors and bugs before it reaches production and the user. Also known as coding or development, this phase involves turning the design into working code. Developers write the actual software using programming languages and tools.

SDLC security

The spiral model is a risk-driven hybrid model that features some of the traits of the waterfall model and Iterative model. Based on the identified patterns of risk, the team can adopt specific activities of different processes. Software testers draft test plans based on the functional specification documented in the low-level design document (LLDD).

sdlc phases

Before releasing the mockups into final production, you’ll need to test it to ensure it is free of bugs and errors. You’ll also need to manage how the system will integrate into existing systems, software, and processes. Learn what the seven stages of SDLC are and how they help developers bring new software products to life. sdlc phases This design phase lays a foundation for the next step of the life cycle, which is development. With that being said, let us have a closer look at each of the software development phases. Once the design specification is prepared, all the stakeholders will review this plan and provide their feedback and suggestions.

Iterative Model

There are different approaches to managing the software development process, catering to varying project requirements, team dynamics, and risk tolerances. The waterfall model works best for small projects where the requirements are well-defined, and the development team understands the technology. Updating existing software and migrating software to a new platform are examples of scenarios that are well-suited for the waterfall model. The agile model requires the team to work in sprints that last for 2 to 4 weeks, each with unique requirements and goals. At the end of a sprint, the product owner verifies the code and greenlights its deployment to users.

This helps companies to finalize the necessary timeline to finish the work of that system. Application performance monitoring (APM) tools can be used in a development, QA, and production environment. This keeps everyone using the same toolset across the entire development lifecycle. There are seven stages in the SDLC and six common models that are used for different projects. In this guide, we’ll go through each stage and model to give you an overview of what becoming a software developer entails. At the end of the SDLC Development Phase, the Development Team creates a working information system.

What Is SDLC? Understand the Software Development Life Cycle

Every project is assigned a feasible cost estimation during the planning phase of SDLC. It also outlines how to distribute resources at each stage, including the team members required, time allotted, tools necessary, and other factors needed to complete the tasks. This phase involves determining the project scope, goals, and requirements together as a team. Planning also includes creating a timeline, allocating resources, and outlining potential risks to the project’s success.

sdlc phases

This phase also involves identifying risks and ways to mitigate or minimize them and planning for quality assurance as well. The iterative and phased stages of an SDLC benefit from the leadership of a dedicated project manager. The major goal of an SDLC is to provide cost effective and appropriate enhancements or changes to the information system that meet overall corporate goals. The project manager is responsible for executing and closing all the linear steps of planning, building, and maintaining the new or improved system throughout the process. 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. Systems analysis and design (SAD) can be considered a meta-development activity, which serves to set the stage and bound the problem.

How Does SDLC Work?

In addition, governance and regulations have found their way into technology, and stringent requirements for data integrity impact the team developing technology systems. Regulations impact organizations differently, but the most common are Sarbanes-Oxley, COBIT, and HIPAA. An SDLC (software development life cycle) is a big-picture breakdown of all the steps involved in software creation (planning, coding, testing, deploying, etc.). Companies define custom SDLCs to create a predictable, iterative framework that guides the team through all major stages of development.

Many companies later adopted and adapted it to develop an effective process tailored to their needs. The SDLC, by its nature, was invented to save costs, build quality and complex software, and satisfy the end-user. The coding process consists of several other tasks, and it’s essential to find and fix all the errors and glitches. So, the developers must brush their skills if required and work as one team. Often, tasks like waiting for test results or code compilation hold up the development process to run an application.


This procedure where the care is taken for the developed product is known as maintenance. Once the required function is done, an analysis is complete with auditing the feasibility of the growth of a product. 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. Find security issues early with the most accurate results in the industry and fix at the speed of DevOps. This model is popular today and offers speed to create and deploy the product and flexibility to adapt quickly to changes.

SDLC exists to help you reduce your time to market, ensure a better product output, save money, and increase the likelihood that what you build is useful to the stakeholders that you care about. The founders spent time on application and website design knowing that if they planned correctly the actual architecting and design stage would be smoother. Each step must be completed before proceeding to the next phase in the development journey. But by going through these steps you can reduce your time to market, ensure a better product output, save money, and increase the likelihood of product market fit.

What Is the Secure Software Development Lifecycle (SSDLC)?

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. For example, the waterfall model works best for projects where your team has no or limited access to customers to provide constant feedback. However, the Agile model’s flexibility is preferred for complex projects with constantly changing requirements. This phase often requires extensive programming skills and knowledge of databases.

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