This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: viva Engage facilitates enterprise social networking and community building.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A business stakeholder asks how Microsoft 365 can help them support organization-wide communities, leadership announcements, and broad employee conversations. Microsoft 365 app or service is the best fit?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Microsoft Viva Engage
Viva Engage supports communities, announcements, and employee engagement.
Microsoft Planner
Why wrong: Planner is mainly for task management, not this requirement.
Microsoft Forms
Why wrong: Forms is mainly for surveys and quizzes, not this requirement.
Microsoft Purview Audit
Why wrong: Audit records activities and does not provide the requested collaboration function.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Viva Engage
Microsoft Viva Engage (formerly Yammer) is the correct choice because it is specifically designed for organization-wide social networking, enabling communities, leadership announcements, and broad employee conversations. It provides a dedicated platform for posts, polls, and threaded discussions that can reach the entire organization, unlike other Microsoft 365 tools that focus on task management, surveys, or compliance auditing.
Key principle: Viva Engage facilitates enterprise social networking and community building.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Viva Engage
Why this is correct
Viva Engage supports communities, announcements, and employee engagement.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Viva Engage facilitates enterprise social networking and community building.
Microsoft Planner
Why it's wrong here
Planner is mainly for task management, not this requirement.
Microsoft Forms
Why it's wrong here
Forms is mainly for surveys and quizzes, not this requirement.
Microsoft Purview Audit
Why it's wrong here
Audit records activities and does not provide the requested collaboration function.
Common exam traps
The trap here is that candidates may confuse Microsoft Viva Engage with Microsoft Teams, but Teams is primarily for team-based chat and collaboration, not for organization-wide communities and leadership announcements, which is the specific use case Viva Engage addresses.
Detailed technical explanation
Viva Engage leverages the Microsoft Graph API to integrate with Azure Active Directory for user authentication and group membership, allowing posts to target specific communities or the entire organization via the 'All Company' group. It supports real-time notifications through Teams integration and uses a feed-based architecture that stores conversations in Exchange Online mailboxes for compliance and eDiscovery. In a real-world scenario, a CEO can post a video announcement in the All Company community, and employees can react, comment, or ask questions, with the thread automatically appearing in their Viva Engage or Teams feed.
Key takeaway
Viva Engage facilitates enterprise social networking and community building.
Real-world example
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Review viva Engage facilitates enterprise social networking and community building., then practise related MS-900 questions on the same topic to reinforce the concept.
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FAQ
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Viva Engage facilitates enterprise social networking and community building..
The correct answer is: Microsoft Viva Engage — Microsoft Viva Engage (formerly Yammer) is the correct choice because it is specifically designed for organization-wide social networking, enabling communities, leadership announcements, and broad employee conversations. It provides a dedicated platform for posts, polls, and threaded discussions that can reach the entire organization, unlike other Microsoft 365 tools that focus on task management, surveys, or compliance auditing.
Review viva Engage facilitates enterprise social networking and community building., then practise related MS-900 questions on the same topic to reinforce the concept.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Viva Engage facilitates enterprise social networking and community building.
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Last reviewed: Jun 11, 2026
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