An inspection is two of the most common types of screening practices found in program projects. The purpose of the inspection is for all inspectors to reach consensus on a work product & approved for use in the project. Commonly inspected work products include program requirements specifications & check designs. In an inspection, a work product is chosen for review & a team meets for an inspection meeting to review the work product. A moderator is selected to moderate the meeting. Each inspector is prepared for the meeting by reading the work product & noting each defect. The purpose of the inspection is to identify & repair defects. An inspection is a defect in any part of the work product that will keep an inspector approval. For example, if the team is inspecting a program requirements specification, each defect will be text in the document you disagree with an inspector.Inspection in program engineering, refers to any peer review work product of trained people looking for defects by a well defined method. The inspection can also be called an inspection after Michael Fagan Fagan, the inventor of the method.A code review is a special type of inspection in which the team examines a sample of code & correct any defect in it. In a code review, a defect is a block of code that does not properly implement its requirements, does not work as the programmer intended, or that it is wrong, but could be improved (for example, could make it more legible or performance can be improved). In addition to helping teams find & fix bugs, code reviews are useful for cross-training programmers on the code under review & to assist junior developers learn new programming techniques.Peer reviews are thought about the best industry practice for detecting program defects early & learning about program artifacts. Peer Reviews are composed of program walkthroughs & program inspections & are essential for the activities of program product engineering. A collection of coordinated knowledge, skills & behaviors facilitates the best possible practice of external evaluations. The elements of peer reviews include the structured review method, checklists standard of excellence of the product, defining the roles of the participants, & forms & reports. Program inspections are the most rigorous external evaluations & to fully utilize these elements in detecting defects. program tutorials selectively draw on the elements to help the producer to get a deeper understanding of an artifact & reaching a consensus among the participants. measurement results reveal that Peer Reviews produce an beautiful return on investment obtained through accelerated learning & early defect detection. For best results, peer reviews are implemented within an organization through a defined program of preparing a owner & procedure, training practitioners & managers, the definition of action & populate a database structure, & support the deployment of infrastructure.