What Is An Automated Market Maker (AMM)?
An automated market maker (AMM) is a decentralized exchange protocol that uses liquidity pools and mathematical formulas to facilitate cryptocurrency trades instead of a traditional order book.
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Nov 23, 2025
âď¸ By peterAlexI
Traders swap assets directly with the liquidity pool, which holds pairs of tokens, and prices are determined by the ratio of tokens within the pool. AMMs allow for instant, permissionless trading and are a core component of the decentralized finance (DeFi) ecosystem.
How it works Liquidity pools: These are smart contracts that hold reserves of two or more tokens. Anyone can contribute their tokens to a pool and become a liquidity provider, earning a share of the trading fees.
1. Algorithmic pricing: A mathematical formula, such as the one used by Uniswap (xĂy=k), sets the price of an asset based on the current ratio of tokens in the pool.
2. Trading: When a user wants to trade, they interact directly with the liquidity pool, not another person.
For example, they might pay with Token A to receive Token B. This transaction adjusts the ratio of tokens in the pool, which in turn changes the price of the tokens for the next trade.
Decentralization: AMMs operate on blockchains and are governed by smart contracts, which makes them automated, transparent, and accessible to anyone with a crypto wallet, 24/7.
Understanding Automated Market Makers
Automated Market Makers (AMMs) are a type of decentralized exchange (DEX) that use algorithmic mechanisms to facilitate the trading of digital assets. Unlike traditional financial markets that rely on buyers and sellers, AMMs aim to maintain liquidity in the DeFi ecosystem through liquidity pools. These pools are supplied with crypto tokens by users, and the prices of these tokens are determined by a constant mathematical formula.
How do AMMs Work?
AMMs operate using liquidity pools. Users deposit cryptocurrencies into these pools to provide liquidity. The pools then use algorithms to set token prices based on the ratio of assets in the pool. When a user wants to trade, they swap one token for another directly through the AMM. The prices for this trade are determined by the pool's algorithm. This system allows AMMs to aim to provide continuous liquidity for a wide range of assets, which may make it easier to trade less popular cryptocurrencies.
Potential Benefits of Using AMMs
There are several potential benefits to using AMMs. One potential benefit is that they aim to provide continuous liquidity for a wide range of assets, which may make it easier to trade less popular cryptocurrencies. Another potential benefit is that anyone may provide liquidity to AMMs and participate in trading, potentially with lower fees compared to traditional exchanges. Another potential benefit is that AMMs often operate without centralized intermediaries, which may offer more autonomy and control to users.
Recognized AMMs in the Market
There are several recognized AMMs in the market, including Uniswap, SushiSwap, PancakeSwap, and Balancer. Each of these has its unique features and supported assets. These platforms have been recognized for their aim to provide liquidity, accessibility, and decentralization.
The Future of AMMs
The future of AMMs in the cryptocurrency ecosystem may hold potential. They are becoming an increasingly important instrument in the DeFi ecosystem, providing a platform for users to trade a wide range of assets in a permissionless and automatic way. As the DeFi space continues to grow and evolve, AMMs may continue to contribute to this evolution.