Uniswap is simple, it is a protocol as well as a decentralized cryptocurrency exchange platform open to all Ethereum users and which allows token swaps. The main objective of Uniswap is to guarantee maximum liquidity for these users. The protocol works thanks to liquidity pools, kinds of token reserves stored on a smart contract, which will be used to carry out trades. The exchange rate between the assets is then fixed thanks to the Automated Market Maker
Using Uniswap allows for exchanges without a trusted third party. Uniswap is very transparent due to its simplicity. Exchange pairs can be set up easily using smart-contracts available to everyone. Uniswap is a nonprofit protocol and the fees only go to users providing liquidity to the system. This allows users to pay very low fees, and therefore to carry out transactions at low cost compared to other decentralized exchanges.