Decentralized Finance — financial services (lending, trading, yield generation, derivatives) built on public blockchains through smart contracts, operating without traditional intermediaries.
DeFi encompasses any financial service that operates through smart contracts on public blockchains rather than through banks, brokerages, or other centralized institutions. Decentralized exchanges (DEXs like Uniswap) allow users to trade tokens directly from their wallets without a central order book. Lending protocols (Aave, Compound) let users earn interest on deposits or borrow against crypto collateral without a credit check. Yield farming involves moving assets across protocols to maximize returns.
DeFi's appeal is permissionless access — anyone with a crypto wallet and an internet connection can participate, regardless of geography or financial history. All transactions are transparent and auditable on-chain. Smart contracts execute automatically without human intermediaries, reducing counterparty risk in principle (while introducing smart contract risk). During the 2020–2021 DeFi summer, total value locked (TVL) in DeFi protocols grew from under $1 billion to over $100 billion.
DeFi carries substantial risks. Smart contract bugs can be catastrophically exploited (hundreds of millions have been stolen through protocol hacks). "Flash loan attacks" allow borrowing enormous sums within a single transaction block to manipulate prices. Rug pulls are common in new protocols. The lack of regulation means no deposit insurance or legal recourse. Understanding these risks is essential before interacting with DeFi protocols.
This definition is for informational and educational purposes only. Nothing on Finance Compass constitutes financial, investment, or trading advice. Always conduct your own research and consult a qualified professional before making financial decisions.