Introduction: Izumi Finance provides Programmable Liquidity as a Service (LaaS) firstly on Ethereum with Uniswap V3, and then will extend the liquidity service to multi-chains with built-in DEX. It will help liquidity providers earn additional liquidity mining rewards as well as trading fees on Uniswap V3. On the other side, it will help protocols attract liquidity in an efficient and lasting way. izumi enhances incentive efficiency by izumi's LiquidBox which enables protocols to distribute incentive rewards in certain price ranges. Meanwhile liquidity providers could earn more trading fees with capital efficiency and get additional incentives provided by related protocols. E.g., stablecoin pools only pay out incentive rewards within a narrow price range (0.99,1.01). izumi solves “pool 2 dilemma” problems by providing structured-incentive and auto-rebased modules, which could attract more liquidity with low emission rate for protocols while enabling non-impermanent loss liquidity mining for liquidity providers. (Pool 2 dilemma - high APR liquidity mining incentives in pool 2 usually brings high inflation rate and sell pressure) Liquidity as a Service (LaaS) Roadmap： a. LaaS on Uniswap V3: LiquidBox The izumi Finance LiquidBox provides programmable liquidity mining (LM) tools with Uniswap v3 LP NFT, which enable protocols to provide incentives precisely and efficiently in certain price ranges, which can optimize liquidity distribution and encourage users to stake Uniswap V3 LP tokens to earn extra rewards. b. Discretized liquidity AMM on multi-chains: iZiSwap Extend concentrated liquidity service like Uniswap V3 to multi-chains. Limit orders will be supported with iZiSwap, and it will be compatible with orderbook and Uniswap V3 that enhance capital efficiency for multi-chains. c. Concentrated liquidity service on bridge: C-AMM Bridge Fast, decentralized, auto-rebalance cross-chain bridges are needed in the multi-chain era. izumi’s C-AMM bridge to make the cross-chain transaction cost less than 1 minute and with a low gas fee. Cross-chain safety will be guaranteed by multi-validator relay networks, which are decentralized and transparent.