Hyperliquid is a decentralized exchange operating on its own Layer-1 blockchain, HyperEVM, utilizing a fully on-chain order book model to enhance performance and scalability. It features a unique architecture that combines two components, HyperCore and HyperEVM, allowing for seamless integration and real-time liquidity access. Users can engage in vaults for trading strategies and participate in governance through Hyperliquid Improvement Proposals (HIPs).