Advancement in fundamental engineering aspects of software development enables IT enterprises to develop a more cost effective and better quality product through aptly organized defect detection and prevention strategies. Software inspection has proved to be the most thriving and proficient technique for defect detection and prevention.The work analyzes data obtained for five different projects from progressive software company of varying software production capabilities. The defect prevention technique involves proactive, reactive and retrospective moves to uncover 70% of defects during inspections and developer unit testing. The validation testing uncovers 29% of defects. Inspection becomes imperative in creating much more ideal software in factories through enhanced methodologies of aided and unaided inspection schemes.