Polygon blockchain is a Layer 2 scaling solution for Ethereum, designed to improve transaction speed and reduce costs. It provides developers with tools to build scalable and interoperable decentralized applications (dApps) on the Ethereum blockchain. Polygon utilizes technologies such as Plasma and zk-Rollups to enhance scalability while maintaining the security and decentralization of Ethereum. Its multi-chain framework offers faster, more affordable transactions, and helps Ethereum handle a growing number of users and dApp developers by reducing congestion and enhancing performance.