A decentralized crypto exchange (DEX) is a peer-to-peer platform that allows users to trade cryptocurrencies without intermediaries or central authorities. Unlike centralized exchanges, DEXs operate using smart contracts on blockchain networks, providing users full control over their assets and private keys. This enhances privacy and reduces the risk of hacks and fraud. Decentralized exchanges often feature non-custodial wallets, liquidity pools, and automated market makers (AMMs) for efficient trading. While DEXs offer improved security and transparency, they can have limitations in scalability, user experience, and regulatory compliance. Despite these challenges, decentralized exchanges continue to grow in popularity due to their commitment to the core principles of blockchain technology—decentralization, trustlessness, and user sovereignty in the digital finance ecosystem.