Rate Providers are contracts that provide an exchange rate between two assets. This can come from any on-chain source, including oracles or from other calculations. This introduces risks around the rate provider being able to supply accurate and timely exchange rates.

ERC-4626 (tokenized vault) is a standard to optimize and unify the technical parameters of yield-bearing vaults. It provides a standard API for tokenized yield-bearing vaults that represent shares of a single underlying ERC-20 token.