Polygon Web3, also known as the Polygon SDK or simply Polygon, is a framework and platform designed to provide a seamless experience for developers building decentralized applications (dApps) on the Ethereum blockchain. Formerly known as Matic Network, Polygon aims to address some of the scalability issues of Ethereum by providing a layer 2 scaling solution.
Also, polygon web3 achieves scalability by utilizing a combination of technologies, including sidechains, plasma chains, and the Ethereum Virtual Machine (EVM). It allows developers to create their own customized blockchain networks, also known as "Polygon chains" or "Polygon sidechains," which are interoperable with the Ethereum mainnet. These sidechains offer faster transaction processing times and lower fees compared to the Ethereum network.