Abstract: Delivering on time good quality product / project is the main objective of any organization. The basic quality measure is post release defect in the product / project. In software development organization, defects identified in the product / project can primarily be because of un-clarified requirements, faulty coding, insufficient testing or poor reviewing capability. Different kinds of reviews are done to ensure highest level of quality. Hence, the role of reviewer at any stage is very crucial to avoid any defect in later stage of the SDLC.