Polygon (previously Matic Network) is the first well-structured, easy-to-use platform for Ethereum scaling and infrastructure development. Its core component is Polygon SDK, a modular, flexible framework that supports building multiple types of applications. Using Polygon, one can create optimistic rollup chains, ZK rollup chains, stand-alone chains, or any other kind of infra required by the developer. Polygon effectively transforms Ethereum into a full-fledged multi-chain system (aka Internet of Blockchains). This multi-chain system is akin to other ones such as Polkadot, Cosmos, Avalanche, etc. with the advantages of Ethereum’s security, vibrant ecosystem, and openness.