What Actually Changed with the Ethereum Fusaka Upgrade

Ethereum just completed the Fusaka upgrade, a hard fork designed to prepare the network for larger scale and cheaper use. While technical on paper, the change touches the core functions of Ethereum — how data is stored, how transactions fit into blocks, and how Rollups like Arbitrum, Base, and Optimism interact with the main chain.   For anyone holding ETH, this upgrade forms the groundwork for lower fees, better network efficiency, and a more resilient long-term ecosystem. A Larger Network With More Room to Breathe The biggest change arrived in how Ethereum handles data source: https://beincrypto.com/ethereum-fusaka-upgrade-changes-explained/