In plain English
What Decentralized finance means
Decentralized finance, usually shortened to DeFi, refers to financial products that run on blockchains instead of through a traditional intermediary. Users interact with smart contracts directly, often using a wallet they control. The rules are set in code, and the system can operate continuously without a conventional market opening or closing time.
Why it matters
DeFi matters because it changes how access, custody, and settlement work. It can make certain services available without a bank or broker account, but users must assess smart-contract risk, oracle risk, liquidity risk, and the possibility of governance changes. Regulation can apply to some DeFi activities, but it does not make the structure risk-free.
Example
A lending protocol may let a user deposit ETH as collateral and borrow a stablecoin against it. The protocol automatically checks the collateral ratio and can liquidate the position if the value falls below a threshold, all according to code.
Quick answers
Common questions
Is DeFi the same as crypto?+
No. Crypto is the broader asset and technology space. DeFi is a subset focused on financial applications built on blockchains.
Does DeFi remove intermediaries entirely?+
Not always. Some protocols are highly automated, but many still depend on developers, governance systems, front ends, or external data providers.
Sources