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What is SDLC? Phases of Software Development & Models

© by The SDLC is a series of phases used to build software apps. These phases break down the development cycle into activities that could be assigned, done, and measured. If you want to know how to use SDLC by keeping a mature service on the market just try to see this article.

Typically, the software development process can be long and laborious. Project leaders and systems engineers, on the other hand, may use SDLC to define, design, create, test, and ultimately deploy data systems or software platforms with higher consistency, efficiency, and general quality.

What Is SDLC?

The SDLC (software development lifecycle) is a framework used by development teams to build high-quality apps methodically and cost-effectively. The SDLC approach is used by both small and large software firms. These teams use a variety of development methodologies, including agile, lean, waterfall, and so on.

From gathering the first requirements of the new product, the software development process provides businesses with a methodical, step-by-step strategy to building effective software. 

The SDLC, also known as the app development life-cycle in system design, data management, and software engineering, is a method for designing, building, testing, and implementing the system. As a system might be built of hardware solely, software only, or even a combination of either, the SDLC idea applies to a wide range of software and hardware combinations. This cycle typically consists of six stages: information gathering, design, development as well as testing, deployment, documentation, and assessment.

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Why SDLC Is Crucial While Designing a Software System.

It serves as a foundation for the planning phase, scheduling, and budgeting. Offers a framework for such a consistent range of processes and deliverables. It’s a project management and tracing method. Improves the visibility of the planning process to all development partners. Increased and accelerated development. Enhanced client relationships. Assists you in lowering the risk of the project and project plan overhead.

How the SDLC Works

The Software Development Lifecycle succinctly describes each process involved in the creation of a software program. This helps to eliminate waste and improve the development system’s efficiency. Monitoring also guarantees that the project remains on schedule and is a viable investment for the organization.

Many businesses will break these processes down into smaller parts. Technology analysis, market analysis, as well as a cost-benefit analysis could all be part of the planning process. Other steps may intertwine with one other. Because developers should remedy faults discovered during testing, the Testing process can run simultaneously with the Development phase.

SDLC Models and Methodologies Explained

Waterfall Model

The waterfall model seems to be the most traditional SDLC methodology. It is straight and uncomplicated, requiring development teams to accomplish one stage of the procedure before moving on to another.

Each step has its project plan and uses knowledge from the preceding stage to avoid repeating problems. However, it is subject to early delays, which can lead to major issues for developers later on.

Iterative Model

The iterative paradigm emphasizes repetition and testing. After each step, new systems of a software process are created to catch any faults and enable developers to continually enhance the finished product by the moment it’s ready for release.

One advantage of this technique is that developers may generate a workable version of a product pretty early in its development process, making it less expensive to incorporate improvements.


Developers created the AGILE model intending to prioritize client demands. This strategy places a heavy emphasis on UX and feedback. This fixes many of the issues with prior programs that were obscure and difficult to use. Furthermore, it makes the program extremely sensitive to consumer feedback. Agile aims to adjust to the changing market by releasing software cycles as rapidly as possible. This needs a strong team with great communication skills. It can also cause a project to deviate from its intended path if too much reliance is placed on client feedback.


DevOps is a security approach that integrates services into a development process. This, like Agile, aims to increase app usability and relevance. The feedback from actual application customers on design and system processes is a big advantage of this strategy. One disadvantage is that it necessitates active communication and collaboration. Parts of a development phase can be automated to offset these higher expenses.

Last Words

How to take your business online? Now that you know about SDLC you can decide which framework to choose.

Always remember that each Software Development Lifecycle model has its own set of advantages and disadvantages. The ideal model for every project is decided by aspects such as need, clarity or ambiguity, system complexity, project size, cost, skill restriction, and so on.

In the situation of an unclear need, for example, the Agile model is most suited since the desired modification may be handled easily at every stage.

The waterfall model is indeed the foundation upon which all the SDLC models are built.

Finally, including system development cycles into projects may assist any development process both in IT and non-IT businesses. For the greatest outcomes, utilize the following information to determine which technique you wish to apply in combination with your SDLC.

SDLC demonstrates what is going on and where the development cycle may be improved.

SDLC, like many company operations, seeks to examine and boost the process of software development. It generates a scalable perspective of the project, since day coding through production data management.

Author Bio:

Ayla Anderson is an enthusiastic blogger and marketing expert whose current interest is website and app development, digital marketing, mostly SEO. Therefore, she works part-time as a consultant for 10 top web design companies, a digital marketing agency from Ukraine. She spends her spare time reading books and traveling. You can follow her on Twitter.