DeFi’s yield aggregator DAO - yearn.finance

At the start of 2020, yearn.finance was a simple protocol that aggregated different lending protocols (i.e. Compound, Aave, and dYdX) to optimize returns for users.

The initial version protocol did not have a token or even many features. Users deposited funds into a smart contract that analyzed returns from various lending markets, and then automatically rebalanced funds to keep up with an optimal strategy.