Peer review is the evaluation of work by one or more people familiar with the topic in hand. Peer review methods are employed to ensure standard and quality work and to improve credibility.
There are four possible outcomes to every peer review.
Peer review is an important aspect of any paper selection. As the papers are reviewed by professionals of the field, the best of the best of the lot is chosen and presented and hence the overall output of the topic at hand comes out in the best possible way.