What it is
DEXs operate through smart contracts, allowing users to exchange tokens without needing to deposit funds into a centralized exchange's custody. Instead of order books managed by a central entity, most DEXs use automated market makers (AMMs) and liquidity pools to facilitate trades. This structure provides greater user control over assets and reduces the risk of single points of failure, though it may have different liquidity characteristics.
DEXs are a core component of the DeFi ecosystem, particularly on Ethereum and its layer-2 networks. News often highlights the trading volume, the introduction of new token listings, or security audits of DEX protocols. Retail investors use DEXs to trade a wider range of tokens, including new or smaller altcoins, but should be aware of potential slippage, gas fees, and smart contract risks.
Why it matters
DEXs enable direct, permissionless crypto trading without intermediaries, but users must manage their own wallet security and understand trading mechanics.
Reviewed under editorial standardsUpdated September 26, 2026Not investment advice