Testing and quality assurance (QA) are critical components of the software development lifecycle.
IT testing involves the process of executing a system or application to identify any gaps, errors, or missing requirements contrary to the actual requirements. QA refers to the systematic activities implemented in a quality system so that quality requirements for a product or service will be fulfilled.
Together, IT testing and QA help deliver a robust software product that meets or exceeds customer expectations in terms of performance, functionality, and reliability.