What is SDLC (Software Development Life Cycle)? Definition, Phases and More

SDLC Definition

SDLC (Software Development Life Cycle) is also known as the process of the new product development software and can be considered a subcategory of the life cycle of systems development.

There are several models of SDLCs, and they can be standardized under ISO / IEC 12207, which lists all the tasks that should be part of the software development and maintenance.

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The life cycle of software development (SDLC)

SDLC Phases:

1) The Planning and Analysis Phase

The software development process begins with an initial planning phase, which includes a requirement analysis. Customers may have a general idea of the type of product they need. But this information does not give us anything about how the application really should be.

This is why software professionals look at the requirements that customers ask to study which requirements are incomplete, which are ambiguous and are merely contradictory.

To prevent the requirements from being incorrect, it is useful to make practical demonstrations of how the application would work frequently.

The next phase would beset the scope of the development project and put it in writing in a document clearly and concisely.

2) Implementation Phases, Tests, and Documentation of the Code

Following the above, the implementation, testing, and documentation phases would come. The implementation consists of the development and programming of the code. Software engineers do this.

The testing of the software is a fundamental part of the software development process because it ensures that the detection of the errors at very early stages and, above all, that they can be corrected as soon as possible.

The internal documentation of the software design carries out during the entire programming process of the application code. It will help a lot to maintain and improve the program in the future.

The development of an application programming interface or an API can also be part of the documentation process. The development team chooses the software engineering process and its phases. And also they will even agree with how much internal documentation is needed.

c) Software Deployment and Maintenance Phases

The next phases are deployment and maintenance. Deployment implies installation, customization, testing and sometimes a period of evaluation of its performance.

These phases only occur when the software has already been thoroughly tested internally and is already available in the market. For older people, it is advisable to include training and support, because the software is effective when they use it correctly.

The maintenance and improvement of software products are crucial to correct defects that arise or to meet the requirements of the software. And also, this could take centuries since sometimes, you have to start designing and programming the software from scratch.

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