[Ethereum Economic Zone Launches Rollup X Development Testnet, Demonstrating Atomic Cross-Chain Execution] According to CryptoBriefing, the Ethereum Economic Zone (EEZ), co-founded by Gnosis and Zisk and funded by the Ethereum Foundation, launched its Rollup X development testnet (devnet) at Devcon 8 to demonstrate synchronous composability. EEZ aims to connect applications on dedicated chains through Ethereum-neutral infrastructure, enabling atomic cross-chain execution. This allows an EEZ rollup or contract on the Ethereum mainnet to call another contract within a single transaction, using ETH as the default gas token without introducing new tokens. EEZ is governed by a Swiss non-profit organization, with consortium members including Aave, Safe, and Centrifuge.