Yearn.finance (YFI) is a suite of DeFi products built on Ethereum that automatically optimizes yield farming strategies. Founded by Andre Cronje in 2020, it became one of the most influential DeFi protocols.
Core Products
Vaults: Automated yield optimization strategies. Users deposit tokens and the vault automatically allocates funds across DeFi protocols to maximize returns.
Earn: Lends assets on the protocol offering the highest interest rate.
Zap: Simplifies complex DeFi interactions into single transactions.
YFI Token
YFI is the governance token of Yearn.finance. It was one of the first "fair launch" tokens — with no pre-mine, no VC allocation, and distribution solely through yield farming. It famously launched at $0 and reached $40,000+ within months.
Significance
Yearn pioneered the concept of yield aggregation, making complex DeFi strategies accessible to everyday users. Its composable architecture — often called "money legos" — demonstrated the power of DeFi's open, interoperable design.