Abstract
With the development of cloud computing and the application of multi-tenant technology, multi-tenant application platforms need to ensure the isolation and security of data when providing cloud services through resource sharing and on-demand customization, and also need to prohibit users from illegally accessing unauthorized resources. In addition, when users access relevant tenant information content across tenants, it is necessary to ensure the security in the cross-tenant collaboration scenario. Based on this, this paper proposes a cross-tenant user access control model, including its components, deployment mechanism and specific implementation process, and then we comprehensively analyzed the characteristics and performance of the model. This model not only ensures the security of data within each tenant, but also facilitates distributed cross-domain access among multiple tenants.