Seamless Layer-2 Migration Services
Stop Paying High Gas Fees. Start Scaling Your dApp. We make your transition to Layer-2 fast, secure, and profitable, moving your application to a high-throughput, low-cost environment like Arbitrum, Optimism, or zkSync—securely and without disrupting your users.
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Why Partner With Errna for Your L2 Migration?
We don't just move your code. We elevate your entire application to thrive in the Layer-2 ecosystem.
Specialized L2 Expertise
Our team consists of dedicated blockchain architects who live and breathe Layer-2. We understand the nuanced differences between rollups and the unique security considerations of cross-chain bridges, ensuring your migration avoids common pitfalls.
Security-First Protocol
Your assets and user data are paramount. Our migration process incorporates multiple smart contract audits, formal verification, and AI-powered threat modeling to guarantee a vulnerability-free transition. We are SOC 2 and ISO 27001 certified.
Zero-Downtime Migrations
We engineer a phased, seamless migration strategy that ensures your dApp remains fully operational throughout the process. Your users experience a smooth transition, not a service interruption.
Strategic L2 Advisory
The L2 landscape is complex. We start by analyzing your dApp's specific needs to recommend the optimal L2 solution—whether it's Arbitrum for its ecosystem, zkSync for its ZK-power, or another network. We ensure you're not just migrating, but upgrading.
AI-Augmented Process
We leverage proprietary AI tools to accelerate code analysis, optimize smart contracts for L2 gas efficiency, and run advanced simulations. This AI-driven approach reduces risk, shortens timelines, and ensures a more robust final product.
Full Ecosystem Support
Migration is more than code. We assist with liquidity provisioning on new DEXs, updating documentation, and executing a community communication plan to ensure your entire ecosystem transitions smoothly along with your technology.
Proven Track Record
With over 3000+ successful projects since 2003, we have a history of delivering complex technical solutions for clients ranging from high-growth startups to Fortune 500 companies. Our experience translates to your success.
CMMI Level 5 & ISO Certified
Our process maturity is independently verified at the highest level. This commitment to quality means predictable outcomes, rigorous testing, and a migration process you can trust completely.
Transparent, ROI-Focused Pricing
We provide clear, upfront pricing with a focus on your return on investment. We'll help you model the projected savings in gas fees and the potential revenue growth from increased user activity to build a compelling business case for migration.
Our End-to-End Layer-2 Migration Services
We offer a comprehensive suite of services to manage every aspect of your transition to Layer-2, from initial strategy to post-launch optimization.
L2 Feasibility & Strategy Consulting
We help you navigate the complex L2 ecosystem to choose the right platform. Our data-driven approach analyzes your dApp's transaction patterns, security needs, and growth projections to identify the L2 that offers the best technical and business fit.
- In-depth analysis of your current L1 architecture and bottlenecks.
- Comparative report on leading L2 solutions (Optimistic vs. ZK-Rollups).
- A strategic roadmap for a phased migration with clear milestones and KPIs.
User & Liquidity Migration Planning
A successful migration requires moving your community and assets seamlessly. We design a comprehensive plan that minimizes user friction and ensures deep liquidity from day one on the new network.
- Development of user-friendly asset bridging guides and tools.
- Coordination with DEXs and liquidity providers on the target L2.
- Crafting a clear communication strategy to keep your community informed and engaged.
Gas Fee & Performance Modeling
Understand the precise economic and performance impact of your migration before writing a single line of code. We build detailed models to forecast your new operational costs and transaction speeds.
- ROI analysis based on projected gas fee savings.
- Throughput simulations to predict performance under peak load.
- Identification of key contracts for gas optimization during refactoring.
Full Smart Contract Migration & Refactoring
We meticulously adapt your existing Solidity or Vyper smart contracts for the target L2 environment. This includes refactoring for EVM differences, optimizing for L2 gas mechanics, and ensuring full backward compatibility.
- Line-by-line code review and adaptation for L2 compatibility.
- Gas optimization techniques specific to rollup architectures.
- Implementation of upgradeable contract patterns for future-proofing.
Custom Bridge Development
When standard bridges don't suffice, we build secure, custom bridges for unique assets or complex state transitions between L1 and L2. Our bridges are designed for maximum security and capital efficiency.
- Architecture of trustless or multi-sig bridging mechanisms.
- Smart contracts for asset locking/unlocking and minting/burning.
- Robust event listeners and relayers for cross-chain communication.
Data & State Migration
We ensure the complete and accurate transfer of all on-chain data and application state to the new L2 network. Our process guarantees data integrity and consistency, so your dApp functions flawlessly post-migration.
- Scripts for exporting historical state data from L1.
- Secure methods for initializing contract state on L2.
- Verification processes to ensure a perfect 1:1 data transfer.
zk-Rollup & Optimistic Rollup Implementations
We are experts in both major rollup technologies. Whether you need the fraud-proof security of Optimistic Rollups or the cryptographic validity of ZK-Rollups, we have the expertise to implement the right solution.
- Integration with existing rollup SDKs and frameworks.
- Development of custom circuits for ZK-Rollups if required.
- Configuration of sequencers, provers, and verifiers.
Comprehensive L2 Security Audits
L2 environments introduce new attack vectors. Our security audits go beyond standard smart contract checks to cover bridge security, sequencer vulnerabilities, and cross-chain communication risks.
- Manual and automated analysis of all migrated and new code.
- Economic modeling to identify and mitigate flash loan or oracle manipulation risks.
- A detailed audit report with actionable recommendations.
Testnet Simulation & Deployment
We conduct a full-scale migration rehearsal on a public testnet. This allows us to validate the entire process, from contract deployment to user asset bridging, in a live environment without risking real funds.
- Deployment of all contracts to a network like Sepolia or Goerli.
- Execution of a comprehensive test plan covering all user flows.
- Performance and stress testing to identify potential bottlenecks.
Validium & Volition Solutions
For applications requiring extreme throughput, like gaming or social media, we can implement off-chain data availability solutions. This keeps costs at an absolute minimum while retaining on-chain security.
- Integration with Data Availability Committees (DACs).
- Hybrid on/off-chain data storage strategies.
- Solutions for applications that need to scale beyond traditional rollups.
Mainnet Deployment & Launch Coordination
We manage the entire mainnet launch, coordinating with all stakeholders—your team, auditors, market makers, and community—to ensure a smooth and successful go-live event.
- A detailed, minute-by-minute deployment checklist.
- War room setup for real-time monitoring during launch.
- Post-launch health checks to verify all systems are nominal.
Post-Migration Monitoring & Support
Our partnership doesn't end at launch. We provide ongoing support and monitoring services to ensure your dApp operates flawlessly on its new L2 home, offering 24/7 incident response if needed.
- Setup of real-time monitoring dashboards for key performance indicators.
- On-call support for any post-migration issues.
- Regular performance reviews and optimization recommendations.
Node Infrastructure Management
We can manage your L2 node infrastructure, ensuring high availability and performance for your dApp's backend. This includes running full nodes, archive nodes, or sequencers as needed.
- Deployment on scalable cloud infrastructure (AWS, GCP).
- 24/7 monitoring and automated failover.
- Keeping node software up-to-date with the latest network upgrades.
dApp Performance Tuning on L2
After migration, we analyze your dApp's performance on the new network and identify opportunities for further optimization, ensuring you get the maximum benefit from the L2 environment.
- Analysis of transaction costs and execution times.
- Optimization of frontend interactions with L2 nodes.
- Recommendations for leveraging L2-native features.
Cross-Chain Interoperability Solutions
We help your dApp communicate and interact with other applications, both on other L2s and back on L1. This unlocks new use cases and expands your user base across the multi-chain ecosystem.
- Integration with generic messaging protocols like LayerZero or Axelar.
- Development of custom adapters for specific cross-chain interactions.
- Strategies for maintaining unified liquidity and state across networks.
Our Proven 5-Step Migration Process
A battle-tested methodology designed for security, efficiency, and zero disruption.
Discovery & L2 Strategy
We begin with a deep dive into your existing L1 application, business goals, and technical requirements. This phase culminates in a data-backed recommendation for the optimal L2 network and a detailed strategic roadmap for your migration.
Architecture & Development
Our expert engineers refactor your smart contracts, develop any necessary bridging infrastructure, and build out the data migration scripts. This work is done in a dedicated development environment, following agile principles with regular check-ins.
Rigorous Auditing & Testnet Deployment
Security is non-negotiable. The refactored code undergoes a comprehensive security audit. We then deploy the entire system to a public testnet for a full-scale rehearsal, allowing for rigorous testing of every feature and user flow.
Coordinated Mainnet Launch
With a proven and audited system, we proceed to the mainnet. This is a carefully coordinated event, managed through a detailed checklist and a dedicated "war room" team to ensure a flawless, zero-downtime launch.
Post-Launch Optimization & Support
Our engagement continues after launch. We provide 24/7 monitoring and support, analyze post-migration performance data, and offer recommendations to further optimize your dApp for the new L2 environment.
L2 Networks & Technologies We Master
We have deep, hands-on experience with the entire Layer-2 ecosystem and the tools required to build on it.
Arbitrum
Optimism
zkSync
StarkNet
Polygon
Ethereum
Solidity
Hardhat
Truffle
Docker
Kubernetes
AWS
Success Stories in L2 Migration
See how we've helped leading Web3 projects achieve massive scale and efficiency.
Case Study: Scaling a DeFi Lending Protocol
Industry: Decentralized Finance (DeFi)
Client Overview: A rapidly growing DeFi lending and borrowing protocol on Ethereum Mainnet. While their Total Value Locked (TVL) was increasing, user growth stalled as high gas fees made small- to medium-sized transactions economically unviable. They needed to move to a low-cost environment to democratize access and compete effectively.
"The migration was a game-changer. Our transaction volume skyrocketed, and we're finally able to serve the entire market, not just whales. Errna's team was meticulous, professional, and a true strategic partner."
The Problem
The protocol's core functions—lending, borrowing, and claiming rewards—cost users between $50-$150 per transaction on L1. This priced out a huge segment of potential users and made features like frequent compounding impossible, hindering the protocol's growth and competitiveness.
Key Challenges
- Migrating billions in TVL without any security incidents.
- Ensuring complex smart contract logic functioned identically on the L2.
- Guiding thousands of non-technical users to bridge their assets.
- Maintaining oracle and data feed integrity on the new network.
Our Solution
We executed a full-stack migration to Arbitrum One, chosen for its strong EVM compatibility and deep ecosystem liquidity.
- Conducted a multi-phase security audit, including economic modeling of L2-specific risks.
- Refactored all smart contracts, optimizing them for Arbitrum's gas model, saving an additional 15% on costs.
- Developed a custom, user-friendly "Migration Dashboard" that guided users through the asset bridging process in one click.
- Deployed and managed dedicated Arbitrum nodes and integrated with Chainlink oracles on the L2 to ensure reliable data feeds.
Positive Outcomes
Case Study: Enabling Low-Cost NFT Minting
Industry: NFT & Digital Collectibles
Client Overview: An innovative NFT marketplace focused on emerging artists. Their unique value proposition was being undermined by Ethereum's high minting and transaction fees, which often cost more than the NFTs themselves. They needed a solution that would enable near-free minting and trading to attract a wider audience of creators and collectors.
"We were on the verge of being priced out of our own market. Errna's migration to zkSync saved our business. The technical expertise was top-notch, and they truly understood our vision for an accessible NFT platform."
The Problem
A simple NFT mint on L1 could cost upwards of $100, while secondary sales incurred significant gas fees for both buyer and seller. This created a high barrier to entry and made the platform unattractive for low-priced, high-volume art collections.
Key Challenges
- Choosing the right ZK-Rollup technology for their specific needs.
- Migrating thousands of existing NFT assets and their metadata.
- Building a reliable off-chain metadata solution integrated with the L2.
- Ensuring the user experience for minting and trading was fast and intuitive.
Our Solution
We chose zkSync Era for its native account abstraction and low transaction costs, which was a perfect fit for their target audience. The migration focused on both scalability and user experience.
- Architected a new minting contract on zkSync that batched multiple mints into a single transaction.
- Developed a data migration script to efficiently transfer all existing NFT ownership records to the L2.
- Integrated with IPFS and Arweave for decentralized, permanent metadata storage accessible from the L2.
- Built a new frontend that abstracted away network complexities, allowing users to interact with the L2 with the same ease as a Web2 application.
Positive Outcomes
Case Study: High-Throughput for a Web3 Game
Industry: Blockchain Gaming
Client Overview: A Web3 strategy game with thousands of in-game actions (crafting, battling, trading) that needed to be recorded on-chain. The L1 network could only handle a few transactions per second, leading to frustrating lag and an unplayable experience during peak times.
"Our game felt broken on L1. Errna's solution for a custom L2 gave us the speed we needed. They are not just developers; they are true problem-solvers who understand the unique demands of blockchain gaming."
The Problem
The game's design required hundreds of state changes per minute per player. On Ethereum, this was technically impossible and financially ruinous. The game needed a dedicated, high-throughput environment to succeed.
Key Challenges
- Handling thousands of transactions per second (TPS).
- Ensuring near-instant transaction finality for a fluid gameplay experience.
- Preventing cheating and exploits in a fast-paced environment.
- Maintaining a secure connection to L1 for asset ownership.
Our Solution
We designed and deployed a custom L2 solution using a Validium architecture. This approach keeps transaction data off-chain for maximum speed while posting cryptographic proofs to L1 for security, providing the best of both worlds for gaming.
- Built a custom Validium chain using the StarkWare SDK (StarkEx).
- Developed game-specific logic for the off-chain execution environment.
- Implemented a Data Availability Committee (DAC) to ensure data integrity without the cost of on-chain calldata.
- Created a secure bridge for players to deposit and withdraw their valuable in-game assets (NFTs) to and from Ethereum L1.
Positive Outcomes
What Our Clients Say
We build partnerships that drive real results. Here's what our clients think.
"The L2 migration was flawless. Errna's team handled immense complexity with incredible professionalism. Our gas costs are down 99%, and our user base is growing faster than ever. They didn't just deliver a service; they delivered a future for our protocol."
"We needed to scale our NFT platform without compromising on security. Errna's strategic advisory was invaluable in helping us choose the right ZK-Rollup, and their execution was second to none. They are the go-to experts for L2."
"Our internal team is strong, but L2 migration has too many unique challenges. Partnering with Errna was the best decision we made. They augmented our team, accelerated our timeline, and helped us avoid costly mistakes. True professionals."
"The communication and project management were exceptional. We always knew the status of the project, and their team was incredibly responsive. The zero-downtime migration they promised was exactly what they delivered."
"The AI-augmented testing process caught a subtle economic vulnerability that two other audit firms had missed. That alone paid for the entire engagement. Their commitment to security is on another level."
"We were hesitant about the cost, but Errna provided a clear ROI analysis that showed the migration would pay for itself in under six months. They were right. Our operational costs have plummeted, and our platform is finally profitable."
Frequently Asked Questions
Your most pressing questions about Layer-2 migration, answered.
A Layer-2 (L2) migration is the process of moving your decentralized application (dApp) from a Layer-1 blockchain like Ethereum to a secondary, faster, and cheaper L2 network (e.g., Arbitrum, Optimism, zkSync). You need it if your growth is being stifled by high gas fees and slow transaction speeds on L1, which can make your application too expensive or slow for mainstream users.
The savings are substantial and depend on the L2 network chosen. Typically, users can expect a 90% to 99%+ reduction in transaction costs. For example, a transaction that costs $50 on Ethereum L1 might cost between $0.01 and $0.50 on an L2. This makes microtransactions and more complex interactions economically feasible.
L2s are designed to inherit the security of the L1 (Ethereum). However, the migration process itself carries risks if not handled by experts. The primary risks involve smart contract bugs in the new or refactored code, and vulnerabilities in the bridge used to move assets. Our security-first process, which includes multiple audits and testnet rehearsals, is specifically designed to mitigate these risks to near-zero.
The timeline varies based on the complexity of your dApp. A simple dApp might take 4-6 weeks, while a complex DeFi protocol with billions in TVL could take 3-6 months. Our process begins with a detailed roadmap so you have a clear timeline from the start. Our AI-augmented tools often help us accelerate this timeline compared to industry averages.
There's no single "best" L2; the optimal choice depends on your specific needs. Optimistic Rollups like Arbitrum and Optimism offer great EVM compatibility and strong ecosystems. ZK-Rollups like zkSync and StarkNet offer potentially lower fees and faster finality. Our L2 Feasibility & Strategy service is the first step where we analyze your project and provide a data-driven recommendation.
We strive to make the user transition as simple as possible. The main action for users is bridging their assets from L1 to L2. We often build custom migration dashboards and provide clear, step-by-step guides to make this process seamless. For many dApps, we can design the new L2 experience to feel almost identical to the L1 version, just much faster and cheaper.
Ready to Unlock True Scalability?
Your dApp is ready for the next level of growth. Let's talk about how a secure, efficient Layer-2 migration can get you there. Schedule a free, no-obligation consultation with our L2 architects today.
Schedule Your Free L2 Assessment