Which government procurement platform was the first to introduce a 'reverse auction' feature that saved U.S. federal agencies over $1 billion within its first five years of implementation?

Government procurement processes have evolved dramatically in the digital age. Various platforms have been created to streamline the acquisition of goods and services by public institutions, increase transparency, and reduce costs. These innovations represent significant retail innovations in the government sector. But do you know which platform has truly transformed how governments connect with vendors and manage contracts? Test your knowledge of government procurement modernization!

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FedBid (now Unison Marketplace)
GSA Advantage!
SAM.gov (System for Award Management)
USA.gov Procurement Portal