
In this post we’re discussing what the upcoming upgrade is expected to unlock for users.
Ethereum’s next major upgrade, Fusaka, is scheduled to go live on December 3. It’s the network’s first upgrade since Pectra in early May – and its impact is expected to be felt across every rollup, wallet and dApp that depends on Ethereum for data and settlement. In practical terms, Fusaka opens a path for rollups to substantially scale Ethereum’s throughput.
Actually, Fusaka consists of two coordinated hard forks. Fulu updates the consensus layer, the part of Ethereum where validators agree on the chain’s history. Osaka upgrades the execution layer, where transactions are processed. Together, they continue a transition toward a more modular Ethereum. The aim is a network in which consensus is rebuilt as Lean Consensus and the L1 verifies tiny zero-knowledge proofs instead of re-executing transactions. That long-term shift will take several years, but Fusaka delivers meaningful gains right now.
“This upgrade is going to directly benefit 1inch users because it is reducing the cost of transacting on layer 2 networks,” explains Tanner Moore, Developer Relations Engineer at 1inch. “Lower transaction costs means 1inch users get better rates across all of our swapping platforms.”
According to Tanner, in a theoretical future where Ethereum gas costs are effectively zero, on-chain trading will be competing directly with centralized exchanges on profit margins, giving the upper hand to decentralized protocols, like 1inch. “On an even playing field, DeFi will win,” Tanner charges.
The main Ethereum scalability-focused improvement proposals (EIPs) to be implemented under the Fusaka upgrade are:
Overall, Fusaka is expected to have a major impact across DeFi. “Fusaka’s focus on scalability is one more step towards DeFi eating into CEX trading volume,” Tanner concludes. “There might even be companies in the future that operate like Coinbase, but have DeFi powering the entire operation without the user realizing it.”
Read more on 1inch Blog | Insights on DeFi, Crypto Swaps & Trading

