DeFi (decentralized finance) is an umbrella term for financial applications built on blockchain networks that replicate traditional banking services (lending, borrowing, trading, insurance) without relying on banks, brokers, or other centralized institutions.
DeFi applications run on smart contracts, which are self-executing programs deployed to a blockchain. When you deposit tokens into a DeFi lending protocol, for example, the smart contract automatically manages the loan terms, interest accrual, and collateral requirements. No loan officer reviews your application. The code handles everything.
The most common DeFi categories include decentralized exchanges (DEXs) like Uniswap, lending platforms like Aave and Compound, yield farming protocols, and stablecoin issuers. Users interact with these protocols by connecting a crypto wallet directly to the application, without creating an account or providing personal information.
The tradeoff is responsibility. In traditional finance, banks offer deposit insurance and fraud protection. In DeFi, you are your own bank. If you send funds to the wrong address, approve a malicious contract, or get caught in a protocol exploit, there is typically no customer support line to call. Security awareness is essential.
DeFi represents one of the most significant use cases for blockchain technology beyond simple payments. It opens financial services to anyone with an internet connection, regardless of location or credit history. The total value locked (TVL) in DeFi protocols is a closely watched metric that reflects confidence in the broader crypto ecosystem.
The Crypto Market panel on the TerminalFeed dashboard tracks overall market capitalization and volume, which includes major DeFi tokens. The Crypto Movers panel highlights top gainers and losers, often featuring DeFi tokens during periods of high activity.