Stages software development life cycle

The requirements document guides developers throughout the development process and can be broken down into tasks for agile development sprints. With effective planning and requirement specifications, the development process will run smoothly. This limits potential scope creep as the project moves forward. After the initial planning stages are complete, developers will move on to designing and prototyping the software.

They will determine necessary features and functionalities, crafting the software architecture by referring back to the requirements document. To streamline the development process, reusable code may be implemented. During implementation, the software is built in the staging or development environment. Also known as building or coding, this stage is where the planning and prototyping come together. The former stages are key to a successful implementation stage, which comprises the bulk of the project timeline.

When utilizing the agile methodology , implementation is where the development sprints take place. The agile SDLC involves the client throughout the development process, making changes based on feedback as the project progresses.

During this stage of the SDLC, test cases will be created to prepare for the next phase of development. Between coding and deployment, the software must go through a series of tests. Coding problems found after deployment are often a much greater burden and make a poor impression on the user. Testing can be performed manually, using automated testing software, or both. Though the majority of testing will occur in-house, software development companies may also bring in external users to test the software.

Finally, software testers will determine whether the software requirements have been met. Skip to content. What is SDLC? Why SDLC? Phase 2: Feasibility study Once the requirement analysis phase is completed the next sdlc step is to define and document software needs. There are mainly five types of feasibilities checks: Economic: Can we complete the project within the budget or not?

Operation feasibility: Can we create operations which is expected by the client? Technical: Need to check whether the current computer system can support the software Schedule: Decide that the project can be completed within the given schedule or not.

Spiral Model The spiral model is a risk-driven process model. Big bang model Big bang model is focusing on all types of resources in software development and coding, with no or very little planning. Report a Bug. Previous Prev. Next Continue. Home Testing Expand child menu Expand. SAP Expand child menu Expand. Web Expand child menu Expand. Must Learn Expand child menu Expand. Big Data Expand child menu Expand. Live Project Expand child menu Expand.

AI Expand child menu Expand. The process can be done in group discussions manually or with the help of software tools.

Irrespective of the methods, the stakeholders are always a part of the discussion. The client's needs are on priority in all the stages. Planning and Analysis In this stage, the ideas are refined and filtered based on market trends, client's needs, the budget estimate of the project, time, etc. The features and functions of the software product are defined and documented. Feasibility Study Here, the practical resources to implement the above plans are listed.

This includes the technology stack, budget, team allocations, working environments, etc. The feasibility study considers economic factors, legal standards, technical needs, operational feasibility, time frame, etc. Design and Prototyping In the design phase, the front-end features of the application such as User Interface for the intended platforms, for example, Android-iOS or Windows-MacOS, templates, color palettes, and boilerplates, are created.

The UI and UX of the designs are worked on and finalized in this stage. This can be done by creating prototypes. A prototype is an early version of a software product, which can be used to give the user an idea about the product in the future. The user can interact with the prototype. Based on their inputs, the product's design is refined, and features to be implemented in the development phase are listed clearly. In the modern SDLC, we perform testing at all phases, so usability testing is carried out here.

In some cases, the prototypes undergo modification or are discarded. Sometimes more than one prototype is given to the users allowing them to choose the best option. This stage of the software development life cycle involves designing the entire system and its elements, including high-level design and low-level design. High-level design HLD is defined as the system's architectural design, whereas low-level design LLD is the design of its components.

Thus, LLD is a detailed description of all components, configurations, and processes of IT infrastructure. There is no clear set of rules to structuring the System Design Document, as it's tailored to each project individually, but it usually includes the following:. Software development is the most time-consuming phase of software development life cycle, but it's more predictable than the Design phase.

Using the design document, software developers write code for the components. The tasks are divided between the team members according to their area of specialization. Front-end software developers are responsible for creating an interface and its communication with the server. Database administrators add necessary data to the database. Software developers use coding guidelines and various tools to write and implement code.

The result of this phase is a working software product and a Source Code Document. After a development team completes programming software, it's time for the Quality Assurance QA team to step in. The QA team tests the software to measure its quality. During this phase, the software undergoes different kinds of tests:. Software developers fix any bugs that come up at this stage, and then the QA team tests the software or its component again.

Quality assurance is an ongoing process that continues until the software is entirely free of bugs and meets the requirements. The tested version of the software is shipped to the market for beta testing. The support team collects feedback from the first users, and if any bugs come up during this stage, software developers fix them.

After that, a new, improved version is rolled out. The deployment stage also includes further software maintenance and its constant strengthening.