What is the SDLC?


Apr 2024

Author by Divyesh Dayani

What is the SDLC?

The Software Development Life Cycle (SDLC) refers to a strategy with clearly defined processes for creating high-quality software. In this, the SDLC methodology focuses on the following phases of software development:

Requirement analysis


Software design like the architectural design

Software development



Definition of SDLC

SDLC or the Software Development Life Cycle may be a process that produces software with the very best quality and lowest cost within the shortest time possible. This software development life cycle provides a well-structured flow of phases that help an organization to quickly produce high quality software which is well-tested and prepared for production use.

The SDLC involves six phases as explained within the introduction. Popular SDLC models include the waterfall model, agile model and spiral model.

How SDLC Works

SDLC - works by lowering the cost of the software development life cycle while simultaneously improving quality and shortening production time. SDLC achieves these apparently divergent goals by following a concept that removes the standard pitfalls of software development projects.

Next, it defines the wants of the new system. It then creates the software through the stages of research, planning, design, development, testing and deployment. 

It’s also important to understand that there's a strong focus on the testing phase. as the SDLC is a repetitive methodology, you've got to make sure code quality at every cycle. 

Stages and Best Practices of SDLC

Following the best practices and/or stages of SDLC ensures the method works during a smooth, efficient, and productive way.

1. Identify the current Problems 

“What are the current problems?” This stage of the SDLC means getting input from all stakeholders, including customers, industry experts, salespeople, and programmers. Learn the strengths and weaknesses of this system with improvement as the goal.

2. Plan

“What do we want?” during this stage of the SDLC, the team determines the cost and resources required for implementing the analyzed requirements. 

3. Design

“How will we get what we want?” It’s crucial to possess a concept for collecting and incorporating stakeholder input into this document. Failure at this stage will almost certainly end in cost overruns at best and the total collapse of the project at the worst.

4. Build

“Let’s create what we would like.”

At this stage, the actual development starts. Also, confirm you've got proper guidelines in place about the code style and practices.

For example, define a nomenclature for files or define a variable naming style like camelCase. This may help your team to supply organized and consistent code that's easier to understand but also to check during subsequent phases.

5. Code Test

“Did we get what we want?” During this stage, we test for defects and deficiencies. We fix those issues until the product meets the first specifications.

6. Software Deployment

“Let’s start using what we got.”

At this stage, the goal is to deploy the software to the assembly environment so users can start using the product. 

Further, as conditions in the world change, we need to update and advance the software to match.

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