MS-721 study guide
MS-721 · Work through your exam, one topic at a time.
MS-721 is the exam behind the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate credential - an intermediate-level, administrator-role certification built around Microsoft 365. It is aimed at the engineer who plans, deploys, configures, maintains, and troubleshoots the collaboration and communications estate of an organization: Teams Phone, Teams meetings, webinars, and town halls, Teams Premium, Teams Rooms and other certified devices supporting flexible workplaces. Candidates are expected to bring a fundamental understanding of networking, telecommunications, audio/visual and meeting room technologies, and identity and access management, and to be fluent in the Teams admin center, the Teams Rooms Pro Management portal, PowerShell, and the Microsoft Call Quality Dashboard. The exam measures four areas: planning and designing collaboration communications systems; configuring and managing meetings, webinars, and town halls; configuring and managing Teams Phone; and configuring and managing Teams Rooms and devices. The MS-721 study guide has 4 sections and about 1,329 words.
01Plan and Design Collaboration Communications Systems
Design questions on MS-721 usually hinge on four cascading decisions: licensing, PSTN connectivity, network readiness, and emergency calling. Every user who places or receives PSTN calls needs Microsoft Teams Phone (included in E5, or the Teams Phone Standard add-on).
348 words, about 2 min02Configure and Manage Teams Meetings, Webinars, and Town Halls
A meeting is collaborative: attendees can share, unmute, and chat, all shaped by policy. A webinar is structured: registration, confirmation emails, attendee reporting, and presenters who explicitly grant attendee capabilities.
315 words, about 2 min03Configure and Manage Teams Phone
Three layers must align before a user can dial out. First, the user needs a Teams Phone license plus a number from Calling Plan, Operator Connect, Direct Routing, or Teams Phone Mobile.
347 words, about 2 min04Configure and Manage Teams Rooms and Devices
Each Microsoft Teams Room is a resource account with a Teams Rooms license, not a human account and not merely an E3. License choice matters.
319 words, about 2 min