What is Automated Market Maker (AMM)

An Automated Market Maker (AMM) is a specific type of decentralized exchange protocol that uses smart contracts containing pooled token reserves rather than a traditional order book to facilitate cryptocurrency trading. AMMs are the backbone of decentralized finance (DeFi), powering platforms like Uniswap, Curve, PancakeSwap, Balancer, and Jupiter.

HOW TRADITIONAL ORDER BOOKS DIFFER

On centralized exchanges like Binance or Coinbase, trades happen when a buyer's order matches a seller's order. This requires active market makers entities that continuously provide buy and sell quotes with capital at risk. AMMs replace this entirely with algorithmic pricing against a locked reserve of tokens.

THE CONSTANT PRODUCT FORMULA

Uniswap's pioneering AMM model uses the formula x × y = k: x and y represent the quantities of two tokens in the pool, and k is a constant. When a user buys Token Y with Token X, they add X to the pool and remove Y. This shifts the ratio, automatically adjusting the price. The larger the trade relative to pool size, the more the price moves this is called price impact or slippage.

LIQUIDITY PROVIDERS AND FEE EARNINGS

Any user can add tokens to an AMM pool and become a Liquidity Provider (LP). LPs receive LP tokens representing their pool share and earn a percentage of every swap executed through the pool. Fee rates vary by protocol and pool: Uniswap V3 offers 0.01%, 0.05%, 0.3%, and 1% tiers.

IMPERMANENT LOSS

The primary risk for LPs: when the price ratio of pooled tokens changes significantly from the deposit ratio, the AMM automatically rebalances the pool leaving LPs with more of the depreciating token. This value reduction versus simply holding is called impermanent loss.

MAJOR AMM PROTOCOLS

Uniswap (Ethereum): Pioneer AMM; V3 introduced concentrated liquidity for capital efficiency.
Curve Finance: Optimized for stablecoin-to-stablecoin swaps with a specialized bonding curve.
PancakeSwap (BNB Chain): Largest AMM on BSC. Balancer: Multi-asset pools with custom token weightings.
Jupiter (Solana): Aggregates liquidity across Solana DEXs.

Terms in addition to the Automated Market Maker (AMM)

Blockchain

A blockchain is a subset of a distributed database. The Bitcoin inventors originally prototyped the system in 2008. This modern database is made up of separate blocks that are connected together in a chronological chain. Blockchains may be used to store a wide range of data types. It has mostly been utilized as a public ledger for bitcoin transactions to date. A peer-to-peer network comprised of independent nodes uses a consensus process to ensure the blockchain's security and legitimacy. Each node in the network keeps a public and immutable copy of the data.

2 Factor Authentication (2FA)

2 Factor Authentication is a security measure with two layers. It is used by the majority of cryptocurrency exchanges. To log in, you must provide not only a password, but also a code obtained, for example, from the Google authenticator.

Airdrop

An airdrop is a method of distributing coins. End users can typically obtain coins for free or in exchange for doing a small task, such as subscribing to a newsletter, sending a tweet, or inviting others via a personal affiliate link. Cryptocurrency airdrops — the act of depositing cryptocurrency into public crypto wallets — are utilized as a marketing, liquidity creation, and network bootstrapping technique for many different types of blockchain initiatives.

Altcoin

Altcoin - "alternative coin" - is any kind of digital currency other than Bitcoin. Since the launch of Bitcoin, the world's first digital currency, many altcoins (as well as supporting blockchains) have been created. Altcoin digital currencies share many similarities to Bitcoin, but consistently and have significant differences. There are about 20,000 altcoins, and this number is expected to grow significantly in the coming years. Altcoins often develop Bitcoin features. Ethereum, currently the most widely used blockchain, supports digital contracts and separate applications where Bitcoin does not. Altcoins are also often created to cater to the needs of different users. The Litecoin blockchain, for example, can process payments quarterly for the duration of Bitcoin.

Cold Storage

Cold storage is the way to store cryptocurrency offline. The word refers to the use of offline wallets that are not connected to the internet. Cold storage is the most secure way to keep cryptocurrencies since an offline currency becomes less likely to be hacked and stolen. Paper wallets, printed renditions of private keys, and offline hardware and software wallets are all examples of cold storage.