Uniswap was built in 2018 on top of Ethereum blockchain, it is the world's second largest cryptocurrency project by market capitalization. It compatible with all ERC-20 tokens and infrastructure such as wallet service.
Uniswap runs on two smart contracts. "Exchange" and "Factory". The factory smart contract is used to add new tokens to the platform and facilitates all token swaps.
Leech, O. (2021, March 23). What Is Uniswap? A Complete Beginner's Guide. CoinDesk.