An AMM prices swaps with a formula and liquidity pools instead of a traditional order book.
Constant-product pools are the Uniswap v2 classic. LPs earn fees but take impermanent loss risk.
In research workflows, Automated market maker is usually interpreted with Decentralized exchange, Liquidity, Impermanent loss, and Slippage rather than as a standalone signal. Smart-contract, oracle, and governance risks are part of the product. Yield without understanding the mechanism is usually underpriced risk.