SharePoint Online provides data isolation mechanisms at the storage level.Logical isolation of customer content within each tenant for Microsoft 365 services is achieved through Azure Active Directory authorization and role-based access control.Multiple forms of protection have been implemented throughout Microsoft 365 to prevent customers from compromising Microsoft 365 services or applications or gaining unauthorized access to the information of other tenants or the Microsoft 365 system itself, including: Preventing the actions of one tenant from adversely affecting the service for another tenant.Preventing leakage of, or unauthorized access to, customer content across tenants and.The two primary goals of maintaining tenant isolation in a multi-tenant environment are: Microsoft cloud services were designed with the assumption that all tenants are potentially hostile to all other tenants, and we have implemented security measures to prevent the actions of one tenant from affecting the security or service of another tenant or accessing the content of another tenant. Microsoft works continuously to ensure that the multi-tenant architectures of our cloud services support enterprise-level security, confidentiality, privacy, integrity, and availability standards. One of the primary benefits of cloud computing is concept of a shared, common infrastructure across numerous customers simultaneously, leading to economies of scale. Microsoft 365 teams have defined roles as part of a comprehensive role-based access control mechanism. Microsoft segregates duties and areas of responsibility for Microsoft 365 to reduce opportunities for unauthorized or unintentional modification or misuse of the organization's assets. Microsoft 365 services inter-operate with each other but are designed and implemented so they can be deployed and operated as autonomous services, independent of each other. Operational security assurance: a framework that incorporates the knowledge gained through various capabilities that are unique to Microsoft, including the Microsoft Security Development Lifecycle, the Microsoft Security Response Center, and deep awareness of the cybersecurity threat landscape.Service-oriented architecture: designing and developing software in the form of interoperable services providing well-defined business functionality.Microsoft 365 is designed with the following principles: Each of these services is self-contained and designed to integrate with one another. Microsoft 365 is composed of multiple services that provide important business functionality and contribute to the entire Microsoft 365 experience. Our staff supports these services and data centers using automated tools and highly secure remote access. Microsoft 365 services are provided through globally distributed data centers, each highly automated with few operations requiring a human touch or any access to customer content. The scale and the scope of services provided by Microsoft make it difficult and non-economical to manage Microsoft 365 with significant human interaction. Microsoft continuously works to ensure that the multi-tenant architecture of Microsoft 365 supports enterprise-level security, confidentiality, privacy, integrity, local, international, and availability standards.
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