QA refers to the company's promise to provide high-quality products. As part of development phase, it ensures that the processes, approaches, or techniques used are free of defects or irregularities.
1. Improve Process Control2. Checks and balances for product quality.3. Early mistakes are prevented, reducing costs.4. It makes Quality Control's job easier.
In QC, defects or bugs are controlled so that software product meets the user's expectations. It is used at the end of the software development cycle to detect defects.
1. Maximize efficiency and reduces costs. 2. Customer specifications can be confirmed by the developers. 3. Reduces rejection rate and saves rejection costs.
In QA, the goal is to ensure the highest quality of product, whereas in QC, the goal is to ensure that the product delivered meets the user’s expectation.
In QA, the developer controls the software through development, whereas in QC, the testing team reacts to errors at the end of the project to fix them.
QA activities result in a roadmap for creating high-quality products, while QC activities involve verifying products after manufacture and before distribution to users.