Decentralized Exchange (DEX)
Web3 / defi
A decentralized exchange is a blockchain-based platform that facilitates peer-to-peer trading of cryptocurrencies without requiring a central authority or custodian to hold user funds. DEXs typically use automated market makers or order book models powered by smart contracts, allowing users to trade directly from their wallets while maintaining full custody of their assets. This architecture eliminates counterparty risk associated with centralized exchanges and provides transparency, as all transactions and liquidity pools are verifiable on the blockchain. Example: Uniswap revolutionized DEX trading through its constant product automated market maker model, where users provide liquidity to trading pools and earn fees from swaps. It became the largest DEX by volume, enabling permissionless trading of thousands of token pairs with minimal friction. Why it matters for DeFi: DEXs are essential infrastructure enabling censorship-resistant, permissionless trading while removing intermediaries that traditionally capture spreads and fees. They allow anyone to launch tokens and trade pairs instantly, fostering innovation and financial inclusion in decentralized markets.
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