Microsoft 365 admin center
The central web portal at admin.microsoft.com where admins manage users, groups, domains, licenses, billing, and organization-wide settings for a Microsoft 365 tenant.
The Microsoft 365 admin center (admin.microsoft.com) is the primary web-based management portal for a tenant, covering user and group management, license assignment, domain verification, billing, and org-wide settings. Global administrators and delegated roles such as User Administrator or License Administrator handle day-to-day operations here. A key exam distinction is that this portal manages tenant-level concerns, while deeper workload configuration—mailbox policies, SharePoint quotas, Teams meeting settings, or compliance—requires the appropriate specialized admin center (Exchange, SharePoint, Teams, or Purview). Knowing which tasks belong where is a common AB-900 test point.
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