ArcBlock is a full-stack Web3 development platform and decentralized cloud computing ecosystem that integrates blockchain technology with a modular architecture. Its core infrastructure is built on Blocklets, which are reusable microservices and application components that enable serverless deployment of decentralized applications (dApps) and custom blockchains. The platform features the AIGNE Framework for building autonomous AI agents, a Decentralized Identity (DID) system for sovereign user management, and the Open Chain Access Protocol (OCAP) for cross-chain interoperability.