Microsoft SC-900 - Microsoft Security Compliance and Identity Fundamentals

In Microsoft 365, the unified audit log retention depends on the audit tier included with the subscription. Current SCI/Compliance documentation states that Audit (Standard)—which is available with Microsoft 365 E3—retains audit records for 180 days. The docs describe that organizations with E3 receive “up to 180 days of audit log retention” for user and admin activities captured in the unified audit pipeline. Longer retention (for example 365 days and beyond with customizable policies) is part of Audit (Premium) features generally associated with E5/E5 Compliance. Because the scenario specifies a Microsoft 365 E3 subscription using the unified audit log and Basic/Standard Audit, the retention period for audit records is 180 days.

Microsoft’s SCI documentation explains that Information Barriers (part of Microsoft Purview and enforced across Microsoft Teams, SharePoint, OneDrive, and Exchange) are used to “restrict communication and collaboration between specific groups of users to avoid conflicts of interest or to comply with regulatory obligations.” Policies define which segments can communicate and which must be blocked, and they control chat, channel conversations, meetings, file sharing, and e-discovery visibility between the defined segments. Typical scenarios include preventing communication between investment banking and research, or between merger deal teams and the rest of the organization. This is fundamentally different from other features: Sensitivity label policies classify and protect content but do not block who can talk to whom; Customer Lockbox manages Microsoft engineer access to customer data during support; and Privileged Access Management (PAM) limits admin task approvals and elevated operations, not end-user communication. When the requirement is to “restrict communication and the sharing of information between members of two departments,” Microsoft prescribes Information Barriers as the purpose-built capability to enforce those restrictions across collaboration workloads.

Microsoft Purview Compliance Manager is a feature in the Microsoft Purview compliance portal that helps you manage your organization’s compliance requirements with greater ease and convenience. Compliance Manager can help you throughout your compliance journey, from taking inventory of your data protection risks to managing the complexities of implementing controls, staying current with regulations and certifications, and reporting to auditors.

Watch the video below to learn how Compliance Manager can help simplify how your organization manages compliance:

Compliance Manager helps simplify compliance and reduce risk by providing:

Pre-built assessments for common industry and regional standards and regulations, or custom assessments to meet your unique compliance needs (available assessments depend on your licensing agreement; learn more).

Workflow capabilities to help you efficiently complete your risk assessments through a single tool.

Detailed step-by-step guidance on suggested improvement actions to help you comply with the standards and regulations that are most relevant for your organization. For actions that are managed by Microsoft, you’ll see implementation details and audit results.

A risk-based compliance score to help you understand your compliance posture by measuring your progress in completing improvement actions.