Jupiter is Solana's leading decentralized exchange (DEX) aggregator and DeFi ecosystem, optimizing trading with minimal slippage by aggregating liquidity across major Solana DEXs like Raydium and Orca. It offers competitive swap rates, quick gasless transactions via its Ultra v2 Swap Engine, and multi-product DeFi tools including lending and perpetuals. The JUP token enables governance and fee discounts, fostering a robust community-driven platform.