Software Quality Assurance (SQA)


Software Quality Assurance (SQA) ensures that project processes are used effectively to produce quality project deliverables. It involves meeting standards, continuously improving project work, and correcting project defects. It evaluates the overall project performance on a regular basis to provide confidence that the project will satisfy the relevant quality standards. The focus of it is on the processes used in the project. It uses a system of metrics to determine whether or not the quality plan is proceeding in an acceptable manner. 

By using both qualitative and quantitative metrics, you can effectively measure project quality with customer satisfaction. These will help you predict and verify the achievement of goals and identify the need for corrective actions. Additionally, SQA tests will help you map quality metrics to quality goals, allowing you to report on the status of quality at periodic project review meetings.

SQA is a process-oriented part of quality management, which should be introduced as early as the project planning stage. SQA deals with the following questions:

It can be performed by a manager, client, or even a third-party reviewer. Examples of quality assurance include process checklists, project audits, and methodology and standards development.

As the US National Institute of Standards and Technology found, it’s 6 times more expensive to fix a bug found during system testing than to organize software requirements gathering in a way this bug wouldn’t appear. Mature quality assurance aims primarily at preventing, not detecting the existing defects. 

These are the characteristics common to all software quality assurance processes:

Additionally, all software quality assurance programs contain the following ten vital elements:

There are two different approaches to SQA:

The Software Quality Defect Management Approach focuses on counting and managing defects. The level of severity can generally categorize defects.  Software development teams use tools like defect leakage matrices and clear and concise control charts to measure and enhance the capability of their software development process.

A software quality defect management approach refers to a systematic process for identifying, tracking, and resolving defects in software products. An effective software quality defect management approach should include the following steps:

An effective software quality defect management approach is important to ensure that software products are of high quality and meet the needs and expectations of customers. It helps organizations to track and resolve defects in a timely manner, improve the customer experience, and increase customer satisfaction.


The Software Quality Attributes are characteristics or properties of software systems that determine the degree to which they meet the needs and expectations of customers. Some of the common software quality attributes include:

Software quality attributes are important because they help to determine the overall quality of software systems and the degree to which they meet the needs and expectations of customers. They are used as criteria to evaluate and compare software systems and to prioritize improvements to software quality.

 The Software Quality Attributes approach works by helping software engineers analyze the performance of a software product. This approach focuses on directing the engineer’s attention to several quality factors.