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What is QA ? What is Testing ? Are both same ?

Quality Assurance (QA) is the activity of providing evidence needed to establish quality in work, and that activities that require good quality are being performed effectively.

Software Testing is the process used to assess the quality of computer software. Software testing is an empirical technical investigation conducted to provide stakeholders with information about the quality of the product or service under test, with respect to the context in which it is intended to operate.

Software Testing is the process used to measure the quality of developed computer software. Usually, quality is constrained to such topics as correctness, completeness, security, but can also include more technical requirements as described under the ISO standard ISO 9126, such as capability, reliability, efficiency, portability, maintainability, compatibility, and usability. Testing is a process of technical investigation, performed on behalf of stakeholders, that is intended to reveal quality-related information about the product with respect to the context in which it is intended to operate. This includes, but is not limited to, the process of executing a program or application with the intent of finding errors. Quality is not an absolute; it is value to some person. With that in mind, testing can never completely establish the correctness of arbitrary computer software; testing furnishes a criticism or comparison that compares the state and behavior of the product against a specification.

An important point is that Software Testing should be distinguished from the separate discipline of Software Quality Assurance (SQA), which encompasses all business process areas, not just testing.

In short, QA and Testing are integral part of the system. Testing is one of the phases in QA. In Testing, one deals with the detecting errors in behavior and structure of the coding. QA ensures desired output of product meeting all the required specifications of the project.


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QA is involved in the project from the beginning. This helps the teams communicate and understand the problems and and concerns, also gives time to set up the testing environment and configuration. On the other hand, actual testing starts after the test plans are written, reviewed and approved based on the design documentation.

Software testing is oriented to "detection". It's examining a system or an application under controlled conditions. It's intentionally making things go wrong when they should not and things happen when they should not.
QA is process oriented,whereas testing is product oriented.
QA measures process,identifies defects and suggests further improvement.
Testing(QC) measures product,identifies defects and suggests further improvement