Uniswap V4 has officially launched on Ethereum mainnet. The centerpiece is a new "hooks" system that allows developers to attach custom logic to liquidity pools.
What Are Hooks?
Hooks are smart contracts triggered at specific points in a pool lifecycle, opening the door to a new category of DeFi applications.
Fee Reduction
Singleton contracts and flash accounting reduce gas costs dramatically — up to 99% cheaper in some configurations.