Ethereum is set to undergo a pivotal technical transformation as it prepares for the deployment of Fusaka, a critical update ahead of its planned parallel execution in 2026. This update will bring significant improvements to network efficiency and scalability, laying the foundation for future innovations like layer 2 solutions. The key focus lies on addressing growing congestion challenges and ensuring smoother transaction processing. The Fusaka update focuses on establishing a gas limit per transaction (16.78 million units) to prevent single transactions from monopolizing entire blocks. This limits resource consumption, minimizes DoS risks, and improves the predictability of block construction. This approach creates the groundwork for parallel execution in 2026, using the Glamsterdam update (EIP-7928). In addition to gas limit adjustment, Fusaka introduces PeerDAS, a revolutionary innovation that allows Ethereum nodes to store only a random portion of layer 2 data, significantly reducing hardware requirements and paving the way for more efficient rollup-type solutions. Testing on testnets will ensure smooth deployment on the mainnet on December 3, 2025. This upgrade signifies a significant step towards professionalizing Ethereum’s infrastructure, enabling it to handle larger scale transactions and further explore the potential of layer 2 solutions like DeFi applications.