What is a liquidity Pool?

Liquidity pools provide liquidity in decentralized exchanges rather than relying on order books.

The advantage of using liquidity pools is that it does not require a buyer and a seller to decide to exchange two assets for a given price, and instead leverages a pre-funded liquidity pool. This allows for trades to happen with limited slippage even for the most illiquid trading pairs, as long as there is a big enough liquidity pool.