The emergence of Layer 2 solutions such as Optimism and Arbitrarum has alleviated congestion and high gas fees on the Ethereum mainnet. However, the increasing competition between L2 and Ethereum has further exacerbated the fragmentation of the ecosystem and diluted its value. Many people are starting to question: What problem has L2 solved? Does L2 really have practical significance? V God gave his answer in his article Scaling Ethereum L1 and L2s in 2025 and beyond: Layer2 has reached a critical decentralization milestone, ensuring billions of dollars in value, and they are currently expanding Ethereum's transaction capacity by 17 times and reducing fees by similar multiples Ethereum has formed a decentralized and modular social structure with dozens of independent entities responsible for incremental growth, which is highly effective in gaining different forms of research, development, and ecosystem building culture. However, this has brought new problems: Each L2 is created by different participants, viewed as a different chain by the infrastructure, and typically follows different standards. Layer 1 requires intermediary transfer between roll ups, resulting in high costs and delays. Each chain requires separate infrastructure components, such as cross chain bridges and oracle machines, and network operators and validators face strict limitations in cross chain operations. This has led to the fragmentation problem of L1, causing a lot of inconvenience for developers and users in terms of composability and user experience. The Ethereum Rollup deployment platform @ Calderaxyz attempts to provide a solution to this problem by introducing the Metalayer meta layer. Metalayer represents a new paradigm for a unified fragmented Layer 2 ecosystem, driving the evolution of blockchain infrastructure by combining Caldera's core strengths - enterprise level stability, multi framework support, and one-stop infrastructure solutions Caldera is a blockchain platform called Rollups-as-a-service (RaaS) that supports builders in building and launching their dedicated Rollups. We have secured $25 million in financing, led by Sequoia Capital, Dragonfly, and Founders Fund, with participation from well-known institutions such as SevenX Ventures, Alliance DAO, and 1kx. Caldera, as a RaaS provider, simplifies the complexity of building blockchain, transforming the process that originally required multiple engineers to spend dozens of hours into a one click, code free deployment process. Caldera's advantages lie in: Enterprise level stability: Caldera's direct service coverage is guaranteed to meet enterprise standards through its 99.9% runtime SLA. The platform uses Betterstack monitoring tool for system health checks, which can monitor in real-time and send abnormal alerts to the technical team in real time. Through 24/7 support and a systematic event response protocol, Caldera provides the stability that businesses need. Multi framework support: Caldera supports all mainstream roll up frameworks, including Arbitrarum Nitro, Optimism Bedrock, zkSync ZK Stack, and Polygon CDK, providing each project with the most suitable framework for its business objectives. Attracted over $1 billion in TVL and more than 8 million wallets, with over 75 teams using Caldera for construction. One stop infrastructure solution: Caldera provides a ready to use solution for critical infrastructure for L2 projects, such as customizable block explorer, Alt DA data storage, stablecoin bridging, customized cross chain bridge UI, guardian nodes, and more. Enable one click deployment of Rollup networks. Metalayer is an interoperability network that automatically deploys to each Caldera chain. When the new rollup is released, it appears on both the testnet and mainnet from day one. By launching a settlement layer that utilizes Hyperlane's permissionless open architecture and collaborating with intent based protocols such as Eco, these protocols can be quickly deployed on every new chain. This means that when users initiate cross chain transactions, they are not just accessing a single bridge or protocol. Metalayer coordinates a series of integrations - aggregating liquidity, calculating optimal paths, and executing transfers through the most efficient routes. With the emergence of new interoperability technologies, from fast withdrawals to shared sorting layers, every application in the Caldera ecosystem will immediately benefit. No need to change the code. The Metalayer protocol is currently under review and preparing for mainnet release. In the next 90 days, Metalayer will release a complete mainnet and API library on each Caldera chain, as well as ZkSync Era, OP mainnet, Base, Arbitrarum One, and Ethereum. Later this year, Metalayer will leverage advances in stack native interoperability technology from partner teams from Arbitrarum, ZKSync, and Optimism to improve speed and reduce costs for users trading on Metalayer. Recently, there has been more focus on infrastructure projects, possibly because Ethereum's development has reached a stage where infrastructure support is needed to solve some problems. Looking at Caldera's blog, they mentioned in 2023 that the original intention of founding Caldera was to help developers create new and exciting dApps and help achieve large-scale adoption of web3. Looking back now, they have already achieved their initial basic goals and continue to strive towards even greater ones. I also hope that their great goal can one day be truly achieved: to make web3 reach the scale, availability, and distribution level of web2, and ultimately have the potential to completely surpass web2.