What is the SDLC? Software development phases and models

Typically, the software development process can be lengthy and laborious. Project managers and systems engineers, on the other hand, can use SDLC to define, design, build, test, and ultimately deploy data systems or software platforms with superior consistency, efficiency, and overall quality.

What is the SDLC?

The SDLC (software development lifecycle) is a framework used by development teams to build high-quality applications in a methodical and cost-effective manner. The SDLC approach is used by small and large software companies. These teams use various development methodologies, including agile, lean, waterfall, etc.

From collecting the first requirements for the new product, the software development process provides companies with a methodical, step-by-step strategy for building effective software.

SDLC, also known as the application development lifecycle in systems design, data management, and software engineering, is a method of designing, building, testing, and implementing the system. Since a system can be made up of hardware only, software only, or even a combination of both, the SDLC idea applies to a wide range of combinations of software and hardware. This cycle typically consists of six stages: information gathering, design, development, and testing, deployment, documentation, and evaluation.

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Why SDLC is crucial when designing a software system.

It serves as the basis for the planning, planning and budgeting phase. Provides a framework for such a coherent range of processes and deliverables. It is a method of project management and traceability. Improves visibility of the planning process for all development partners. Increased and accelerated development. Strengthened customer relationship. Helps you reduce project risk and project plan overhead.

How the SDLC works

The software development lifecycle succinctly describes each process involved in creating a software program. This helps to eliminate waste and improve the efficiency of the development system. Monitoring also ensures that the project is on schedule and is a viable investment for the organization.

Many companies will break these processes down into smaller parts. Technology analysis, market analysis as well as cost benefit analysis could all be part of the planning process. Other stages can be intertwined. Since developers have to address flaws discovered during testing, the testing process can run concurrently with the development phase.

SDLC models and methodologies explained

Waterfall pattern

The waterfall model appears to be the most traditional SDLC methodology. It’s simple and straightforward, forcing development teams to complete one step in the process before moving on to another.

Each step has its own project plan and uses the knowledge from the previous step to avoid repeating problems. However, it is prone to early delays, which can cause major problems for developers down the road.

Iterative model

The iterative paradigm emphasizes repetition and testing. After each step, new systems of a software process are created to detect defects and allow developers to continually improve the finished product as it is ready for release.

One of the advantages of this technique is that developers can generate a workable version of a product early enough in its development process, making it cheaper to incorporate improvements.


The developers created the AGILE model with the intention of prioritizing customer requests. This strategy places a strong emphasis on UX and feedback. This fixes many problems with previous programs which were obscure and difficult to use. Additionally, it makes the program extremely responsive to consumer feedback. Agile aims to adapt to changing market conditions by freeing software cycles as quickly as possible. It requires a strong team with great communication skills. It can also cause a project to deviate from its intended course if over-reliance is placed on customer feedback.


DevOps is a security approach that integrates services into a development process. This, like Agile, aims to increase the usability and relevance of applications. A great advantage of this strategy is the feedback of real application customers on design and system processes. One downside is that it requires active communication and collaboration. Parts of a development phase can be automated to compensate for these higher expenses.

Final words

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

Always remember that each software development lifecycle model has its own set of pros and cons. The ideal model for each project is determined by aspects such as need, clarity or ambiguity, system complexity, project size, cost, skill restriction, etc.

In case of unclear need, for example, the Agile model is the most suitable because the desired change can be easily managed at each step.

The waterfall model is indeed the basis on which all SDLC models are built.

Finally, including systems development cycles in projects can help any development process in both IT and non-IT organizations. For best results, use the following information to determine which technique you want to apply in combination with your SDLC.

SDLC shows what’s going on and where the development cycle can be improved.

SDLC, like many business operations, seeks to examine and stimulate the process of software development. It generates an evolutionary perspective of the project, from the day of coding through the management of production data.

Authors biography :

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

Gordon K. Morehouse