What Is DeFi in Crypto?
DeFi stands for Decentralized Finance. It’s a big trend in the crypto world. DeFi lets people use financial services like borrowing, lending, and trading without banks. Instead, it uses computer programs called smart contracts that run on blockchains like Ethereum.
The first big DeFi project was MakerDAO in 2017. It made a coin called DAI, which is always worth about 1 US dollar. DeFi became really popular in 2020, when projects like Uniswap and Aave let people trade coins and earn interest just by using their crypto.
Now in 2025, DeFi is still growing. People are using it to trade real-world things (like real estate), move money between different blockchains, and build faster and safer crypto tools.
In short, DeFi is changing how we use money — all without banks or middlemen.
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