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Software Quality Assurance (SQA)

Software Quality Assurance (SQA)

SQA is the set of processes and standards used to make sure software is built the right way, not just checked at the end. It focuses on preventing defects rather than just catching them. SQA runs throughout the entire SDLC, not as a single final step.

QA vs QC vs Testing

Aspect

Quality Assurance (QA)

Quality Control (QC)

Testing

FocusImproves the development process to prevent defects.Checks the finished product to ensure it meets quality standards.Verifies that the software works as expected.
GoalPrevent defects before they occur.Detect defects in the completed product.Find bugs and verify functionality.
ExampleDefining coding standards and development processes.Reviewing the final software against quality standards.Running test cases to check whether features work correctly.

SQA Standards and Processes

1. Technical Reviews and Audits

SQA includes technical reviews and audits throughout every stage of the Software Development Life Cycle (SDLC). These activities use active and passive verification and validation techniques to ensure the software is being developed according to the required standards.

2. Software Testing for Quality Control

Testing is an important part of SQA. It helps identify bugs and verifies that the software meets the expected quality before it is released.

3. Error Collection and Analysis

SQA also involves collecting, managing, and analyzing defects. By studying reported issues and failure trends, teams can identify problem areas and take steps to improve the software.

4. Following Quality Standards

Many organizations align their SQA processes with recognized standards such as ISO or CMMI. These standards help maintain consistent quality and make it easier to measure and compare quality across different projects.

How SQA Fits into SDLC

SQA is not a single phase, it runs across the entire SDLC from planning to maintenance. QA is one of the most vital aspects of the software development life cycle (SDLC). It's an important thread that runs through every stage, from conception to post-deployment maintenance.

The earlier SQA practices get applied, the cheaper it is to catch and fix problems, since fixing bugs post-release can cost up to 100 times more than addressing them during the planning stage.