Yield optimizer

A yield optimizer, sometimes referred to as a yield aggregator, is an automated service that takes the reward token from a yield farm, sells the reward token and automatically buys more of the type of token deposited in the vault. The yield optimizers (or aggregators) with the most liquidity are protocols like Beefy Finance and Yearn Finance. These protocols offer strategies like providing liquidity to a DEX pool and using money markets to earn yield on single tokens. This last strategy, in particular, involves depositing a token as collateral on a money market, earning interest on that (+ eventual liquidity mining rewards) and then borrowing the same token (thus avoiding liquidation risk, since the same asset is used as collateral) to redeposit it in the lending side, increasing the rewards.

Related Technical Standards

The Ethereum Improvement Proposal EIP-4626 proposes a standard that allows for the implementation of a standard API for tokenized vaults representing shares of a single underlying ERC-20 token.