The vision of CMCC (Blockchain Shared Cloud) is to create an infrastructure and technical support platform for blockchain technology innovation, quality assurance, operation supervision and knowledge dissemination. Using cloud computing technology to build a hybrid cloud model service platform, providing shared services related to IAA, PAAS and SaaS. By providing testing and regulatory technical means such as access and audit platforms, automated testing platforms, consensus and transaction tracking platforms, and optimizing shared functional services to generate additional value, the services provided for the entire blockchain industry include but are not limited to supervision, research and development Experiments, education and training, evaluation and certification and other fields.