Zug, Switzerland – February 17, 2026 – The Ethereum Foundation (EF) Platform team has today articulated a refreshed and comprehensive vision for the relationship between Ethereum’s foundational Layer 1 (L1) blockchain and its burgeoning ecosystem of Layer 2 (L2) scaling solutions. Dubbed the "North Star," this strategic imperative aims to ensure Ethereum scales as a cohesive, robust system, fostering confident adoption by a global user base. The announcement marks a pivotal moment in Ethereum’s development trajectory, moving beyond the initial "rollup-centric roadmap" to embrace a more deeply integrated, mutually beneficial architecture.
This forward-looking perspective, shared via an official blog post, delves into the distinct yet complementary roles of L1 and L2s, outlining how the entire ecosystem can leverage their combined strengths to forge an unparalleled platform for decentralized applications. While some aspects of this vision are already manifesting, the EF acknowledges that ongoing experimentation, iteration, and community engagement will be crucial for validating and refining its long-term success.
A New Chapter for Ethereum’s Scaling Strategy
The core message from the Platform team is clear: it’s time for the Ethereum Foundation and the broader community to update its operational model for the L1 and the ever-expanding network of L2s. This strategic re-evaluation comes approximately five years after the groundbreaking "rollup-centric roadmap" was first introduced, proposing rollups as the primary pathway to scale Ethereum. That initial thesis, put forth on platforms like Ethereum Magicians, correctly identified the potential of off-chain computation settling on L1, but the ecosystem has evolved dramatically since then.
Chronology of Evolution: From Rollup-Centric to Cohesive System
The journey of Ethereum’s scaling began with the understanding that a single monolithic blockchain, while secure and decentralized, could not handle the transaction throughput required for a global, permissionless economy. Early attempts at scaling, such as sharding, were complex and faced significant engineering hurdles. The "rollup-centric roadmap," first formally proposed around 2021, offered a pragmatic and powerful alternative. It posited that Ethereum L1 would focus on data availability, security, and settlement, while L2s, primarily rollups (both optimistic and ZK), would handle transaction execution and computation, bundling them into compact proofs posted back to L1.
Over the past half-decade, this vision has not only taken root but blossomed into a vibrant, diverse landscape. An extensive ecosystem of chains has grown around Ethereum L1, each adopting different properties and levels of integration. Some, like "Stage 2" rollups, inherit full decentralization and security guarantees directly from Ethereum L1, offering robust extensions of its capabilities. Others, such as validiums and prividiums, inherit a subset of security properties, catering to specific use cases that might prioritize privacy or even higher throughput at the cost of some decentralization. Many more projects, while not strictly L2s, build upon the ubiquitous Ethereum Virtual Machine (EVM) standard, demonstrating the magnetic pull of Ethereum’s developer tooling and network effects.
Crucially, the technological underpinnings allowing L2s to share Ethereum’s inherent security and deep liquidity have matured at an astonishing pace. Bridging mechanisms, data availability layers, and proof generation techniques have advanced significantly. The competitive advantages offered by L2s – lower transaction costs, faster finality, and specialized environments – have become unequivocally clear to users and developers alike. Concurrently, L2s have evolved beyond mere scaling solutions, transforming into rich ecosystems and communities in their own right, each with its unique culture, applications, and user base.
Simultaneously, the L1 scaling roadmap has also come into sharper focus, with significant advancements in areas like data availability sampling (DAS) and the anticipated implementation of proto-danksharding and eventually full danksharding, which will dramatically increase the data throughput available for L2s. This confluence of L2 maturation and L1 refinement necessitates an updated framework for understanding and nurturing their interrelationship. The Ethereum Foundation’s latest communication acknowledges these shifts, seeking to learn from past successes and failures to chart a more explicit and effective path forward.
The Defined Roles of L1 and L2s: A Collaborative Architecture
The updated vision clearly delineates the specialized roles of Ethereum L1 and its Layer 2 counterparts, emphasizing their collaborative potential to build a global, permissionless on-chain economy.
Ethereum L1: The Unyielding Foundation
Ethereum L1 stands as the world’s preeminent programmable blockchain, unrivaled in its adoption, developer engagement, decentralization, resilience, and censorship resistance. It is the undisputed heart of the decentralized finance (DeFi) ecosystem, boasting the deepest liquidity pools and serving as the ultimate settlement layer for digital assets. Its core values of security, decentralization, and permissionless access are non-negotiable.
The EF highlights that Ethereum L1 now possesses a clear and accelerated path to scaling while rigorously preserving these fundamental values. The rapid advancements in Zero-Knowledge (ZK) technology, driven by dedicated teams across the ecosystem, have been particularly transformative. ZK proofs offer a cryptographic mechanism to verify computation without re-executing it, allowing L2s to batch vast numbers of transactions and prove their validity on L1 with unparalleled efficiency and security. This technological leap means Ethereum L1 can scale by several orders of magnitude in the coming years, maintaining its integrity as a secure, decentralized base layer.
Layer 2s: Specialization, Customization, and Innovation Hubs
While Ethereum L1 provides the bedrock, the reality is that no single chain, however powerful, can cater to the myriad and diverse needs of a truly global on-chain economy. Even with a 1000x scaling factor, a monolithic L1 would struggle to meet the specific requirements of every conceivable application. This is where L2s shine, offering specialization and customization that an L1 cannot practically provide.
L2s can be tailored for:
- Specific application domains: Imagine an L2 optimized for high-frequency gaming, another for enterprise supply chain management, or one dedicated to privacy-preserving transactions.
- Novel features and experimental designs: L2s provide a sandbox for innovation, allowing developers to experiment with new virtual machines, privacy features, or consensus mechanisms without impacting the stability of L1.
- Region-specific regulations or cultural norms: Future L2s might cater to particular regulatory environments or user preferences, offering localized experiences.
- Extreme performance requirements: For applications demanding ultra-low latency or massive transaction throughput, specialized L2s can be engineered to deliver.
- Cost optimization: By abstracting away much of the transaction execution from L1, L2s can significantly reduce gas fees, making blockchain interactions accessible to a wider audience.
This specialization enables L2s to serve niche markets and user groups more effectively, expanding the overall utility and reach of the Ethereum ecosystem.
Mutually Beneficial Relationships: The Symbiotic Ecosystem
The synergy between Ethereum L1 and its L2s is designed to be mutually beneficial, reinforcing the strength and centrality of the entire ecosystem.
Why L2s Flourish on Ethereum L1:
L2s choose to "put down roots" on Ethereum L1 for compelling reasons, inheriting critical advantages:
- Unparalleled Security: By settling transactions or proofs on Ethereum L1, L2s inherit its battle-tested security, decentralization, and censorship resistance. This means their transactions are ultimately secured by thousands of nodes globally, making them incredibly difficult to revert or compromise. Users can trust that their assets and data are safe.
- Deepest Liquidity and Capital Efficiency: Ethereum L1 hosts the largest pool of decentralized capital in the crypto world. L2s, by integrating with L1, gain access to this vast liquidity, enabling seamless asset transfer and composability across the ecosystem. This capital efficiency is vital for DeFi applications and other financial primitives.
- Largest User and Developer Base: Ethereum boasts the most extensive and active community of users, developers, and researchers. L2s benefit from this network effect, attracting talent, fostering innovation, and gaining immediate access to a massive potential user base. The robust tooling, documentation, and existing infrastructure built around Ethereum significantly lower the barrier to entry for L2 development.
- Shared Standards and Interoperability: The EVM standard, pervasive across Ethereum L1 and many L2s, facilitates interoperability and eases migration for developers. This shared language and architecture enable seamless communication and asset transfer, creating a cohesive user experience despite transactions occurring on different layers.
How Ethereum L1 Benefits from L2s:
The growth of L2s is not just about offloading transactions; it profoundly reinforces Ethereum L1’s unique position in the on-chain economy:
- Increased Transaction Fee Revenue: L2s regularly post transaction data and proofs to Ethereum L1, paying gas fees for these operations. As L2 usage grows, so does the demand for L1 block space, driving up transaction fees and enhancing ETH’s value proposition as the network’s native asset. This contributes directly to the economic security and sustainability of the L1.
- Reduced State Bloat and Enhanced Efficiency: By handling the bulk of execution and state management off-chain, L2s prevent Ethereum L1 from becoming bloated with excessive data. This keeps the L1 lean, efficient, and accessible for full node operation, crucial for maintaining decentralization and network health. L1 can focus on its role as a secure, minimalist data availability and settlement layer.
- Accelerated Innovation and Ecosystem Expansion: L2s serve as vital experimentation grounds for novel scaling techniques, virtual machines, and application designs. This distributed innovation benefits the entire ecosystem, with successful L2 features potentially influencing future L1 upgrades or inspiring new L2 designs. The proliferation of L2s also expands Ethereum’s reach into new markets and use cases, attracting a broader demographic of users and businesses.
- Increased Demand for ETH: Beyond transaction fees, ETH is required for staking on L1 to secure the network. The success and growth of L2s indirectly increase the utility and perceived value of the underlying L1, thereby strengthening demand for ETH as a settlement asset, collateral, and the ultimate economic security primitive.
- Reinforced Centrality as the Settlement Layer: As the network of L2s expands, Ethereum L1 solidifies its role as the undisputed global settlement layer. All L2s ultimately derive their security and finality from L1, positioning Ethereum as the foundational trust anchor for the entire decentralized web. This strengthens its long-term competitive advantage against other blockchain platforms.
The Ethereum ecosystem must actively cultivate these benefits. Some are actively debated within the community, while others are long-term theses requiring validation through rigorous experimentation, measurement, and analysis. The core principle remains that the L1-L2 relationship must be genuinely mutually beneficial for sustained success, building upon the foundational achievements of the past five years.
Recommendations for L2s: Charting the Future Course
With this clarified vision, the Ethereum Foundation offers clear recommendations for L2s, their development teams, and their communities to ensure alignment with the overarching goal of a cohesive and scalable Ethereum.
- Deep Integration with Ethereum L1: L2s are encouraged to maximize their reliance on Ethereum L1 for core security and data availability. This means utilizing L1 as the ultimate source of truth for transaction data, proving correctness via fraud or validity proofs posted on L1, and leveraging L1’s robust bridging mechanisms. Deep integration fosters a unified security model and enhances composability across the ecosystem. L2s should aim to achieve higher "rollup stages" as defined by L2Beat, indicating increasing levels of decentralization and security inheritance from L1.
- Prioritize Decentralization and Security: While L2s offer flexibility, the EF stresses the importance of prioritizing decentralization and security properties, mirroring Ethereum L1’s ethos. This includes decentralizing sequencers, proving systems, and upgrade mechanisms. The goal is to avoid single points of failure and ensure that L2s are as resilient and censorship-resistant as possible, providing users with the same level of trust they expect from L1.
- Contribute to Common Goods and Ecosystem Health: L2 teams are urged to contribute back to the shared infrastructure and research that benefits the entire Ethereum ecosystem. This includes open-sourcing code, participating in core protocol research, collaborating on common standards (e.g., cross-chain messaging, shared sequencing), and fostering a vibrant, inclusive developer community. This collective effort strengthens the network effect and ensures long-term sustainability.
The Ethereum Foundation’s Commitment: Building the Future
The Ethereum Foundation recognizes its crucial role in facilitating this evolved L1-L2 relationship. To realize this vision, the EF is actively engaged in several key initiatives:
- Core Research and Development: The EF continues to heavily invest in fundamental research and development for both L1 and L2 technologies. This includes advancing ZK proof systems, optimizing data availability layers, improving cross-chain communication protocols, and exploring innovative approaches to shared sequencing and interoperability.
- Strategic Funding and Grants: Through various grant programs and direct funding initiatives, the EF supports promising L2 projects, core infrastructure development, and open-source tooling that benefits the entire ecosystem. This financial backing is critical for nurturing new ideas and accelerating the development of essential components.
- Tooling and Infrastructure Development: The EF actively supports the creation and improvement of developer tooling, client implementations, and other critical infrastructure components that enhance the developer experience for both L1 and L2s. Efforts focus on ensuring client diversity, robust testing frameworks, and comprehensive documentation.
- Fostering Collaboration and Standardization: The EF acts as a central hub for coordinating efforts across diverse teams. This involves organizing workshops, conferences, and contributing to the Ethereum Improvement Proposal (EIP) process to establish common standards, best practices, and facilitate open dialogue among L1 and L2 developers.
- Community Education and Outreach: A key part of the EF’s role is to educate the broader community on the evolving technical landscape, the importance of security, and the benefits of a cohesive L1-L2 ecosystem. This ensures that users, developers, and stakeholders understand the rationale behind strategic decisions and can participate effectively.
In conclusion, the Ethereum Foundation’s updated L1-L2 vision heralds a new era of collaborative scaling. By clearly defining the complementary roles of Ethereum L1 as the secure, decentralized settlement layer and L2s as specialized, high-performance execution environments, the ecosystem is poised to deliver a global, permissionless on-chain economy. This strategic alignment, supported by ongoing research, development, and community engagement, is designed to provide the most compelling and robust platform for all users, enabling confident adoption and driving the next wave of decentralized innovation.