CoW Protocol finds the lowest price for trades across all exchanges and aggregators, such as Uniswap and 1inch, ensuring protection from MEV. It matches trades peer-to-peer when possible, saving money by cutting out the middleman. The protocol batches orders, matches Coincidences of Wants (CoWs), and sources excess volume from all DEXs and DEX aggregators, ensuring users always get the best price for their trade.