In Peer Review, scientific articles are vetted by scientific colleagues.
It should be noted that the process of vetting in peer production is different.
Peer production is based on equipotential participation, i.e. the a priori self-selection of participants, and the communal vetting of the quality of their work in the process of production itself. Peer review is based on credentialism, peer production vetting is based on anti-credentialism. Peer review is part of an elaborate process of institutional and prior validation of what constitutes valid knowledge; peer production vetting is a posteriory vetting by the community of participants.