This document discusses quality and testing. It begins by asking if 99% defect-free is sufficient, then gives examples of issues with a 1% defect rate. It defines quality as meeting or exceeding customer expectations. Quality assurance involves preventing defects through testing, reviews, and other methods. Testing works with quality assurance to find defects for the customer. Without quality, there are costs from rework, lost customers, and more. Quality must be built in from the start through goals, planning, and continuous improvement. Individuals have a role to play through involvement, improvement, and customer satisfaction using a Plan-Do-Check-Act approach.