Key Points: Trader Joe, an Avalanche-based DEX (decentralized exchange) Trader Joe officially launched Arbitrum. He introduced the Arbitrum One ecosystem’s centralized liquidity AMM “Liquidity book” into the Arbitrum One network. The Arbitrum One mainnet will host the DEX in early 2023. Liquidity Book is the most efficient AMM in DeFi, providing traders with zero slippage