Osmosis is the largest decentralized exchange in the Cosmos ecosystem, built as a sovereign appchain using the Cosmos SDK. It supports cross-chain token swaps via IBC (Inter-Blockchain Communication) and features customizable liquidity pools, superfluid staking, and concentrated liquidity. Osmosis serves as a central trading hub connecting dozens of Cosmos chains and has expanded to support non-Cosmos assets through bridges. The platform offers advanced DeFi features including limit orders, stableswap pools, and a growing ecosystem of third-party applications built on top of its infrastructure.