Arbitrum is a pioneering Layer-2 solution developed by Offchain Labs. Arbitrum uses optimistic rollup technology to enhance Ethereum's scalability and efficiency through its Layer-2 blockchains, Arbitrum One and Arbitrum Nova. These chains simultaneously improve transaction throughput and reduce costs while maintaining Ethereum’s robust security. Today, Arbitrum is developing Arbitrum Orbit, which will allow anyone to launch novel Layer-3 blockchains atop Arbitrum One or Arbitrum Nova, further compounding throughput and cost reductions.Arbitrum’s suite of scaling solutions helps decentralized applications (dApps) perform with the speed and ease needed to create novel applications akin to traditional web services. Developers can create more sophisticated dApps than on Ethereum, making blockchain technology more accessible and practical for businesses and consumers alike. Through their trailblazing work, Arbitrum and Offchain Labs play a crucial role in the evolution of the Ethereum ecosystem and the broader blockchain industry. Their partnership with ETHChicago emphasizes their commitment to fostering innovation and growth in the Ethereum community and the adoption of blockchain technology by enterprise businesses.