Uniswap is a popular decentralized trading protocol, known for its role in facilitating automated trading of decentralized finance (DeFi) tokens. An example of an automated market maker (AMM), Uniswap launched in November 2018 but has gained considerable popularity this year thanks to the DeFi phenomenon and associated surge in token trading. Uniswap aims to keep token trading automated and completely open to anyone who holds tokens while improving the efficiency of trading versus that on traditional exchanges. Uniswap creates more efficiency by solving liquidity issues with automated solutions, avoiding the problems which plagued the first decentralized exchanges.