0x is a professional-grade decentralizedexchange infrastructure and liquidity aggregation protocol used by hundreds ofWeb3 applications. Its API and smart contracts enable developers to integratebest-price token swaps by sourcing liquidity from over 100 DEXes, AMMs, andprivate market makers simultaneously. The CrossChainReceiver feature enablesefficient cross-chain token transfers and swaps for users moving assets betweenblockchains. Major Web3 platforms including MetaMask, Coinbase Wallet, and Zapperrely on 0x infrastructure for their swap functionality. 0x's open-source,modular design makes it a foundational building block of DeFi infrastructure.