# ParaSwap

**Published by:** [Shawna](https://paragraph.com/@shawna00/)
**Published on:** 2023-12-25
**URL:** https://paragraph.com/@shawna00/paraswap

## Content

Executive SummaryParaSwap is a decentralized exchange (DEX) aggregator that optimizes swaps for users through better prices, limited gas fees, and lower slippage. ParaSwap sources their liquidity from major DEXes such as Uniswap, Balancer, Curve, Kyber, in addition to ParaSwapPool, their professional Market Maker network. ParaSwap is free to use and users can interact with it directly on the ParaSwap interface or through wallets such as Argent, Monolith, and Metamask. ParaSwap’s v3 was launched in February 2021 with a brand new UI, highly optimized smart contracts, and a robust suite of dApp services. Now, traders and dapps can benefit from ParaSwap’s state-of-the-art Plug & Play API, easy-to-use SDK, and performant set of smart contracts for both off-chain and on-chain integrations.ChallengesBefore integrating with Infura, ParaSwap was using their own in-house infrastructure, which quickly proved to be very challenging to maintain and scale. Achieving the equivalent performance without a service like Infura would have required full-time team members tasked with scaling and maintaining full nodes.SolutionIn order to stay focused on their core technical challenges, ParaSwap chose Infura for their infrastructure needs. Using Infura’s APIs and Archive Node data, ParaSwap is able to source on-chain prices (the most vital part of their system), query user balances, and track the state of user transactions.

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