Decentralized Finance (DeFi) is an open financial system powered by smart contracts and blockchain oracles that has the potential to replace the decades-old financial system with opaque infrastructure and processes. DeFi provides users with permissionless access to a variety of financial instruments without having to cede control of their assets to others. One of the main advantages of decentralized finance is that it is open for anyone to participate, from anywhere, at any time.
Uniswap is an Ethereum-based protocol designed to facilitate automatic exchange transactions between ETH and ERC20 token digital assets, automatically providing liquidity on Ethereum. It has the most striking features of decentralization, permissionless, and unstoppable among current DeFi projects.