What is SDLC and How to Use It in Practice?

Custom software development, an iterative process with numerous stages for producing and deploying software products, is used to develop software projects. Because it aids in measuring and improving the process, the SDLC helps analyze software development at every stage. In addition to outlining the most common methodologies businesses use during the software development life cycle, we will walk you through each step of the SDLC development cycle. To avoid errors at any stage of the development process, read this article.

How the SDLC Works

As a result of the SDLC’s definition of every step involved in creating and deploying software, process waste is decreased, and efficiency is increased. Businesses can confirm timeliness, budget adherence, and the software’s ongoing viability as an investment by integrating monitoring into the SDLC. The following are the phases of the software development life cycle:



The gathering of requirements is the start of the SDLC’s first step. The planning phase is when this happens. Estimating the time and money required to finish the work is part of this. At various stages of the planning process, stakeholders—or anyone who benefits from the software—should be able to offer their opinions. Detailing the project’s scope, the software’s intended use case, and the required constraints are important.


Since the needs have already been identified, it is now time to evaluate their viability and legitimacy. The group decides whether the demands can be included in the program. A need specification document must be written as the next step. This document outlines the following stage of the SDLC.


We use the requirements specified in the planning step in this phase of the SDLC process. This process contributes to the definition of the overall software architecture in addition to helping to identify hardware and system requirements.

The following, or fourth, phase of the SDLC uses the system design requirements created during the designing phase as its input. Testers must develop a suitable testing strategy during the design phase. It details what needs to be tested and how to examine it.


Construction and testing

While some teams prefer to break the process into two phases, others view development and testing as one. Whatever route a team chooses to take to develop, the process stays the same. Everything hinges on your decision.

The work is divided into modules or units when the system design documentation is complete. The actual coding then begins.

Since this is the stage of the SDLC where the actual code is written, it is the most important for the development team. Currently, the software development lifecycle is longer. Once all of the code has been written, it is tested to make sure it complies with all requirements.

Functional testing includes but is not limited to, acceptance testing, integration testing, system testing, and unit testing.


After a software product has passed testing, it enters the implementation phase, also called the deployment phase. The main focus is the end-user receiving software or having it installed on their device.

Beta testing comes first, following the delivery of the product to the customer. Any problems or recommendations for improvement are then communicated to the development team. Once all adjustments have been made, the last rollout takes place.


After the product has been deployed, there is a maintenance phase. Developers concentrate on resolving problems that clients and end users experience at this point.

SDLC Techniques

There are numerous software development methodologies, each sufficiently different from the others, to satisfy the needs of a business organization. So, we examine the most well-liked:


The Agile method is the most widely used in SDLC, and it strongly emphasizes user feedback and experience, which helps to address a number of problems brought on by earlier, more difficult projects. Agile software development incorporates frequent releases and iterative development to keep up with the market’s quick and dynamic pace.


The Waterfall model frequently involves a sequential progression, similar to a cascade, in the software development life cycle; under this model, work on the program cannot proceed to the next phase until the phase that comes before it is finished. To eliminate bottlenecks or other isolated processes, businesses can use the Waterfall SDLC to assess a process’s continuity and viability at every stage. Companies can now get rid of bottlenecks and solitary processes thanks to this.


The DevOps methodology for developing software is very similar to the Agile methodology. Similar to Agile, it emphasizes the importance of constant communication and teamwork to guarantee that every aspect of the product is taken care of. Development, testing, and operational security tasks in information technology will all be covered by this team.

The Lean methodology may be advantageous for software development. Businesses are increasingly implementing Lean principles, which can be thought of as a plan for increasing efficiency all around to stay competitive. The main goal is to increase customer value while reducing resource waste (material, financial, and energy).



The iterative and cascade model ideas are incorporated into the spiral model, a template for the software development process. The Spiral model depicts the life cycle of a product as it is being developed as a Spiral that starts at the planning stage and unwinds with the completion of each phase. By the end of the following round, we ought to have a working prototype that has been tested to complement what we already have. A prototype may be made public once it meets all requirements. The Spiral model’s key feature is the emphasis on potential threats.

The software development life cycle is designed to assist businesses in identifying the project’s stage and moving it as quickly as possible toward the finished product. Planning, analysis, designing, development and testing, implementation, and maintenance are among the stages of the SDLC. Any software development project must carefully consider which SDLC methodology is best for the project’s goals and circumstances. A bad choice could cause the project to be unrecoverable or send the entire process back several steps.

A software project goes through custom software development, an iterative process that consists of many stages for creating and deploying software products. The SDLC is useful for analyzing software development at every stage since it helps to measure and improve the process.

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