An Exchange admin for the municipal mail system reviews mail traffic and mailbox usage reports. Which admin surface fits that need?

Exchange admin center reports deliver Exchange-focused mail insights such as mailbox usage and mail traffic patterns, which is the right admin surface when a municipal messaging admin must brief leaders on the city’s Exchange Online estate. Those reports stay inside the Exchange administrative experience so mail specialists can review how mailboxes are used and how traffic behaves without pretending that every Microsoft 365 chart belongs in one undifferentiated portal. For MS-900, recognizing that Exchange has its own reporting home is as important as knowing that a central Admin center exists for broader adoption views.

Microsoft Viva Insights personal wellbeing cards help individuals understand work patterns; they are not the Exchange admin reporting plane for citywide mailbox and mail-flow analysis. SharePoint page analytics for news posts measure intranet page engagement and do not explain SMTP-style mail traffic or mailbox quota pressure. The Windows 365 Cloud PC resize wizard changes Cloud PC compute sizing and has no role in Exchange reporting.

An exam-relevant caveat is purpose split: use Exchange admin center reports for mail insights, the Copilot dashboard for Copilot program visibility, and the Microsoft 365 Admin center for cross-workload adoption. Mixing those tools is a common fundamentals trap. Operationally, authenticate with an Exchange admin role, open Exchange admin center reports, confirm mailbox usage and mail traffic views populate for representative municipal mailboxes, and retain a weekly snapshot so messaging operations can trend quota and traffic before help-desk spikes appear.