● Software Development Life Cycle (SDLC) is a process to design, develop and test high-quality software.
● SDLC helps to build software applications.
● It is the framework, which defines the tasks performed at each step in the development process from planning to maintenance.
● The aim of SDLC is to produce software that meets the expectations and demands.
Why SDLC is used:-
● System development life cycle (SDLC) is used to develop IT projects.
● Its purpose is to deliver high quality products as per the requirement.
● It is used to lower the cost of software development which improves the product quality.
● It is used to control and track the projects easier.
● It is used to identify the project's risks at the early stage.
Advantages of SDLC:-
● SDLC is very simple to understand and easy to use.
● SDLC can improve the development speed.
● It reduces the project risks.
● All the team members can have a clear project development plan.
● It is easy to track and control the projects.
Disadvantages of SDLC:-
● It increases the development cost and time.
● It is an outdated process.
● Before starting any project, it should be clear with the exact requirement.
● It is not suitable for long-term projects.
● There is a lack of flexibility.
Phases of Software Development Life Cycle:-
● The Software Development Life Cycle process consists of various phases to work in a smooth and productive way.
● The multiple phases of SDLC involve planning, coding, building, testing, releasing, deploying, operating, and monitoring.
● The following diagram shows the various stages of the typical SDLC process.
Explanation of phases:-
● This is the initial stage of the SDLC process. It includes calculating the cost, to create the project target goals, and can create the project structure.
● This planning phase includes the project requirements and the purpose.
● During this planning phase, team members will discuss how they can implement the project successfully without risks.
● This coding phase includes the actual code of the project.
● At this phase, the developer translates the software design into source code.
● It includes code analysis and code review for multiple types of devices.
● This building phase takes the code to build the software.
● This is the phase where actual development starts.
● At this phase, the programming code will be generated and the product is built.
● Developers should follow the coding guidelines provided by the organization.
● This testing phase reduces the number of errors if the code is incorrect.
● In this phase, the application can be tested before making it available in the market.
● All types of tests can be performed at this stage.
● This phase can be handled by the QA team to check any errors.
● This release phase includes the team managing and deploying releases across all different environments.
● It includes maintenance and support of the application which has to be developed.
● This phase involves different environments like production, deployment and pre-production.
● In this deployment phase, the application is officially released into the production environment or UAT.
● UAT is the replica of the production environment.
● The application can be available to the customers in this deployment phase.
● This is the final stage where we can fix errors before releasing the application.
● In this operation phase, users can discover bugs that cannot be found during testing. These bugs can be resolved, which can be a new development cycle.
● For every new release, a new development cycle can be launched.
● At this phase, the development cycle is almost finished.
Monitor Phase :-
● In this phase, various elements of the application are monitored.
● This includes the system performance, user experience, an analysis of errors or bugs in the system.
● After the product is released in the market, its maintenance should be done for the existing user.
● In this phase, it involves the updating and changing of the system.