Aave is an open-source non-custodial protocol on Ethereum for decentralized lending and borrowing. For lenders, the protocol mints ERC20-compliant aTokens at a 1:1 ratio to supplied assets. Interest immediately starts compounding continuously, represented by a steady increase in the amount of aTokens held by the lender. This interest stream may be redirected to any address, separate from the aTokens that represent the underlying principle.