Points of Focus

• Ethereum shifts L2 role from scaling tool to differentiated execution layer.
• L1 reinforced as settlement, liquidity, and DeFi anchor.
• New standards push L2s toward higher security and deeper integration.

Ethereum is redefining how its ecosystem is structured. In a March 23, 2026 post, the Ethereum Foundation moved away from the long-standing idea that layer-2 (L2) networks exist mainly to scale the base chain. Instead, it positions Ethereum layer-1 (L1) as the core settlement and liquidity hub while pushing L2s to compete on features, customization, and control.

This isn’t a minor adjustment. It is the first clear update to Ethereum’s L1–L2 model in roughly five years, and it changes what success looks like for every rollup building on the network.

The Ethereum Foundation published an article outlining the future vision for the L1 and L2 ecosystem. The post notes that L1 will maintain its role as the global settlement and DeFi hub, while the core mission of L2s has shifted from pure scaling to offering differentiated and… pic.twitter.com/KI8159hMws

— Wu Blockchain (@WuBlockchain) March 24, 2026

Ethereum L1 strengthens its role as settlement and liquidity hub

The Ethereum Foundation makes one point clear: Ethereum L1 remains the center of the on-chain economy.

It continues to anchor:

• Final settlement
• Shared state and liquidity
• DeFi activity

The shift comes as Ethereum’s scaling roadmap becomes clearer. ZK-based technologies have advanced faster than expected, allowing L1 to scale without compromising decentralization or security. At the same time, data capacity for rollups isn’t yet constrained. Blobs, introduced to support L2 data availability, are currently only about 30% utilized, according to the Ethereum Foundation’s March 2026 update.

The distinction is important, as it suggests Ethereum isn’t offloading scaling out of necessity but is deliberately structuring the system this way.

1/ How L1 and L2s can build the strongest possible Ethereum

tldr: we should continue to lean into the unique capabilities of each layer, and make sure all users have a clear path to securely and seamlessly benefit from the core properties of Ethereum pic.twitter.com/jUPNscgSix

— joshrudolf.eth (@rudolf6_) March 23, 2026

L2s move from scaling layer to product layer

The bigger shift lies in how Ethereum now defines L2s.

Previously, their primary role was scaling. Today, the Ethereum Foundation describes their main function as delivering differentiated services that L1 can’t provide.

These include:

• Application-specific environments
• Additional privacy guarantees
• Custom execution and pricing models
• Ultra-low latency use cases

Vitalik Buterin has previously framed L2s as a “spectrum,” not a single standard. The Ethereum Foundation’s update formalizes that view. L2s are no longer extensions of Ethereum. They are becoming independent on-chain execution environments that compete on design, user experience, and market strategy.

There have recently been some discussions on the ongoing role of L2s in the Ethereum ecosystem, especially in the face of two facts:

* L2s' progress to stage 2 (and, secondarily, on interop) has been far slower and more difficult than originally expected
* L1 itself is scaling,…

— vitalik.eth (@VitalikButerin) February 3, 2026

This raises a direct question for builders: if L1 continues to scale, what unique value does your L2 provide?

Security standards and native rollups reshape L2 expectations

The Ethereum Foundation is also tightening expectations around security.

L2s are now encouraged to meet at least Stage 1 standards, meaning users must be able to exit safely to L1 even under failure conditions. Projects seeking deeper alignment are pushed toward Stage 2, synchronous composability, and “native rollups,” where L2 security is fully verified by Ethereum.

This is a shift from optional best practices to clearer benchmarks. It introduces a visible gap between L2s that inherit Ethereum’s security and those that don’t.

Fragmentation remains the system’s unresolved risk

Despite the clearer structure, one issue remains open: fragmentation, which the Ethereum Foundation identifies as the main downside of a multi-L2 system, where moving between chains still introduces friction for both users and developers.

Efforts are underway to address this through interoperability frameworks and faster settlement flows, alongside upcoming protocol upgrades such as Glamsterdam, which targets improvements in Layer 1 efficiency, block production, and transaction inclusion fairness.

These changes are designed to strengthen the base layer, but the problem remains structural, as increasing L2 differentiation makes coordination harder.

Ethereum’s new model solves scaling at the architectural level but does not yet resolve cohesion at the ecosystem level, and that tension now sits at the center of Ethereum’s next phase.