Polygon PoS Polygon PoS is an EVM-compatible, proof-of-stake sidechain for Ethereum, with high throughput and low costs. Get started with PoS Get started with building on Polygon PoS. Run a PoS node Find out the differences between types of PoS nodes and how to set up, run, and deploy them. PoS architecture Find out about the PoS architecture and its Heimdall and Bor layers.