AltLayer is a decentralized protocol designed to enhance blockchain rollups' security, performance, and interoperability. It uses "Restaked Rollups," integrating existing rollup stacks like OP Stack and Arbitrum Orbit with EigenLayer's restaking mechanism for improved security and decentralization.AltLayer provides three core services via modular Actively Validated Services (AVSes): VITAL for state verification, MACH for fast finality, and SQUAD for decentralized sequencing. Its Rollup-as-a-Service (RaaS) platform allows users to quickly launch customized rollups, supporting both ephemeral and persistent rollups. This protocol supports multi-chain and multi-VM environments, facilitating seamless cross-rollup interactions and robust security through features like fraud proofs.