Arbitrum

Ethereum Layer 2 Networks: Arbitrum, Optimism, and zkSync's Swiss Connections

Ethereum's scaling solution is not Ethereum itself — it is a constellation of Layer 2 networks that execute transactions off-chain while inheriting Ethereum mainnet's security. Switzerland has a direct stake in this architecture: Matter Labs, the company behind zkSync, is based in Zug. Understanding how these networks work, what they cost, and who is deploying on them is essential intelligence for any institutional participant in the Ethereum ecosystem.