This document discusses quality assurance and its importance. It defines quality assurance as the process of demonstrating that a product can satisfy users. The aim of quality assurance is to improve usability, performance and reduce defects. Quality assurance gives value by helping to ensure projects are useful and can stand the test of time. It needs documented standards and best practices. Quality control is the implementation of regular testing against quality definitions and standards to refine processes. The quality cycle involves creating a site, assuring its quality, controlling quality through testing, then refining the site.