Arbitrum is a widely used Layer-2 blockchain solution designed to enhance the performance of Ethereum. By processing transactions off the main Ethereum chain and then recording the results back on it, Arbitrum significantly increases transaction speed and reduces costs. This allows users and decentralized applications (dApps) to benefit from Ethereum’s security while enjoying faster and more affordable transactions. Arbitrum employs advanced cryptographic techniques called rollups to bundle many transactions together, improving scalability without sacrificing decentralization or security.