What Aave does
Aave is a decentralised lending protocol where users supply crypto assets to earn interest and borrow against that collateral, all without a counterparty or credit check. Suppliers receive aTokens that accrue interest in real time, and Aave pioneered flash loans — uncollateralised loans that must be borrowed and repaid within a single transaction, now a staple DeFi primitive used well beyond Aave itself.
The current version, Aave v3, runs across more than a dozen networks including Ethereum, Arbitrum, Base, Optimism, Avalanche and Polygon, with features like isolation mode for riskier assets and eMode for correlated-asset efficiency. Aave also issues GHO, its own overcollateralised, USD-pegged stablecoin borrowed directly against Aave collateral, with a stability module to help hold the peg.
Governance runs through the Aave DAO, where AAVE holders vote on risk parameters, new asset listings and treasury use. Stakers who lock AAVE into the protocol's safety module act as a backstop, first in line to absorb losses in the event of a shortfall, in exchange for staking rewards.
Risks worth knowing
Aave has an unusually clean security record for a protocol its size and age, but it isn't immune to risk: liquidation cascades in fast-moving markets, oracle manipulation, and GHO peg wobbles have all been live concerns at points. Smart contract risk never goes to zero, no matter how many audits a protocol racks up.
Competition has intensified too — Morpho and Euler now offer more capital-efficient, permissionless market designs, and Sky's Spark protocol competes directly for the same institutional stablecoin-lending demand Aave wants for GHO. Aave's scale and brand are real moats, but they're not unassailable.