What is Software Development Life Cycle (SDLC)?

What is Software Development Life Cycle  (SDLC)?

The Software Development Life Cycle is a systematic process that outlines the steps and stages involved in developing, testing, deploying, and maintaining software applications or systems.



Steps involved in SDLC 

  1. Requirement Gathering & Analysis 

    • Understand and document the project's goals, scope, and requirements.
    • Interact with stakeholders to gather detailed requirements and expectations.

  • 2. Design 
    • Design the architecture and high-level structure of the software.
    • Create system specifications, design documents, and mockups.

  • 3. Development 
    • Develop the actual code based on the design specifications.
    • Write, test, and integrate code modules or components.

  • 4. Testing 
    • Test the software to ensure that it meets functional, performance, security, and other quality requirements.
    • Identify and address defects or issues through various testing types (unit testing, integration testing, system testing, etc.).

  • 5. Deployment
    • Prepare the software for deployment in the target environment.
    • Install and configure the software in production or user environments.

  • 6. Maintenance 
    • Monitor the software in the live environment to ensure it works as expected.
    • Address issues, apply updates, and make enhancements as needed.


A Realtime Example: Online shopping Application 

  1. Requirement Gathering & Analysis 

In this phase, Product Owner, Project Manager, and Business Analyst will understand the Aim, and purpose and gather the exact requirement of the customer. For this purpose, they may conduct some market research, customer surveys, and interviews.

Based on the Analysis they will prepare a Software Requirement Specification document (SRS) and also plan of Project schedule, Cost estimation, and other requirements.

2. Design 

This phase is conducted by System Architect & UI /UX Design team, they convert all the requirements to a design model like how this software looks in future

Based on the design they will create a Design Document Specification.


3. Development 

This phase is conducted by developers, they will prepare the code to develop the software product using suitable programming languages like C, C++, JAVA, ANDROID, PYTHON , PHP etc..


4. Testing 

This phase is conducted by QA Team or Tester to test the software to ensure that it meets functional, performance, security, and other quality requirements. Also Identify and address defects or issues through various testing types (unit testing, integration testing, system testing, etc.).


5. Deployment

This phase is conducted by Project Managers, once the software is certified and no bugs or errors are stated, the final software is released in the market or deployed in a customer environment by installing and configuring the software.


6. Maintenance 

If any issues come up and need to be fixed or any updating is to be done is taken care of by the Support Managers and testers in the maintenance phase.

They will monitor the software in the live environment to ensure it works as expected.


SDLC Models

Software Development Life Cycle (SDLC) models are structured approaches or frameworks that provide a systematic and organized way to manage the process of developing software applications.



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