The article details AltLayer, a decentralized resilient Rollup-as-a-Service (RaaS) protocol designed to provide a scalable second-layer solution to alleviate on-chain congestion and costly transactions cost. AltLayer utilizes the modular concept and restaking mechanism to enhance security, decentralization and processing speed. It provides Rollup services, allowing users to quickly create customized Rollups, supporting multi-chain and multi-virtual machine functions. AltLayer's core technologies include Restaked Rollup and RaaS, the latter of which simplifies the deployment of Rollup through a code-free interface. In addition, AltLayer issued the native token ALT, which is used to pay for fees, governance and consensus mechanisms within the ecosystem. The article also discusses AltLayer's team background, financing situation, and opportunities and challenges it faces.