What is Prebid, and how does it work?

Prebid is an open-source set of solutions that enable different programmatic media-trading solutions related to header-bidding. Prebid.js is used by publishers to implement header-bidding on their websites. It allows multiple demand sources to bid on ad inventory simultaneously, increasing competition and potentially boosting revenue for publishers. Prebid Server complements Prebid.js by moving the auction to a server-side environment.