Quality Assurance or QA metrics are the indicators that allow quantitative analysis of the quality and efficiency of the software development and testing life cycle. The QA metrics are used to estimate the progress of software development and the outcome of the test results. You can easily track and monitor the status of the QA activities, evaluate and measure team efficiency and optimize the entire Software Development Life Cycle.
Without QA metrics, you won't be able to measure and analyze the quality of the software application. Defining the critical QA metrics during the development process and estimating how well the developed software application works is crucial.