Polygon

A Polygon (formerly Matic, MATIC) is a framework for building Ethereum-compatible blockchains and layer-2 scaling solutions. It offers multiple options ranging from sidechains (which sacrifice some Ethereum security) to rollups (which inherit Ethereum’s security), allowing developers to choose their preferred security and performance trade-offs.

Origins and vision

Polygon emerged from Matic Network, founded by Jaynti Kanani, Sandeep Nailwal, and Anurag Arjun. The team recognised that Ethereum could not scale to billions of users on its base layer alone, and layer-2 solutions would be necessary.

Rather than building a single scaling solution, Polygon took a broader approach: providing a framework and set of tools so developers could build custom Ethereum-compatible blockchains optimised for their specific use case.

The Polygon PoS sidechain

Polygon’s flagship product is the Polygon PoS sidechain — a sidechain that runs its own proof-of-stake validators. Users and developers can move assets from Ethereum to Polygon using a bridge, trade and deploy contracts on Polygon at minimal cost, then move assets back to Ethereum.

Polygon PoS sacrifices some security guarantees compared to Ethereum. If the sidechain’s validators (a smaller set than Ethereum’s validators) collude or turn malicious, assets could be lost. However, this is the trade-off: lower security for much higher throughput and lower fees.

Rollups and rollups

More recently, Polygon has developed Polygon Rollups — optimistic rollups and ZK-rollups that bundle transactions on Polygon, publish proofs to Ethereum, and inherit Ethereum’s full security.

Polygon Rollups offer higher security than the PoS sidechain but lower throughput than a sidechain. They are designed for applications that need Ethereum-grade security but cannot afford Ethereum’s fees.

EVM compatibility

All Polygon solutions are compatible with the Ethereum Virtual Machine. A smart contract written in Solidity can be deployed to Polygon with zero or minimal changes. This means developers already familiar with Ethereum can build on Polygon without relearning concepts.

This compatibility has been crucial to Polygon’s success. Rather than fragmented ecosystems, Polygon attracts projects that want the benefits of Ethereum’s developer ecosystem but lower fees.

Ecosystem and adoption

Polygon has become one of the most-used blockchains globally, with more daily transactions than Ethereum base layer in many periods. Major DeFi protocols (Uniswap, Aave, Curve), NFT marketplaces (OpenSea), and gaming projects run on Polygon.

However, much of this activity may be speculative or low-value transactions attracted by the low cost per transaction. More important by total value locked, Ethereum still dominates.

Governance and vision

Polygon has a governance token (MATIC) that allows holders to vote on protocol changes. This decentralised governance distinguishes Polygon from many other scaling solutions, though the concentration of voting power among early investors and the team is substantial.

Polygon’s stated vision has evolved from “Ethereum scaling” to “becoming the leading platform for Web3” — a broader ambition that includes support for multiple types of blockchains, not just Ethereum-compatible ones.

Competition from other L2s

Polygon faces increasing competition from Arbitrum and Optimism, which are also Ethereum rollups. These competitors have received substantial venture capital and developer support, particularly from the Ethereum Foundation.

Some developers view rollups (which inherit Ethereum security) as preferable to sidechains (which do not), creating a technical advantage for Arbitrum and Optimism. However, Polygon’s earlier market entry and larger active user base give it structural advantages.

See also