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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.
Which TWO Microsoft 365 services are primarily used for enterprise social networking and communication within an organization?
Microsoft Teams
Microsoft Teams provides chat and channels for communication.
Microsoft Viva Engage
Microsoft Viva Engage is an enterprise social network.
Microsoft SharePoint
Why wrong: Microsoft SharePoint is for document management.
Microsoft Stream
Why wrong: Microsoft Stream is for video.
Exchange Online
Why wrong: Exchange Online is for email.
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 Teams
Microsoft Teams is correct because it serves as the primary hub for persistent chat, meetings, and collaboration, integrating enterprise social networking features such as channels, @mentions, and threaded conversations. Microsoft Viva Engage (formerly Yammer) is correct because it provides a dedicated enterprise social network for broad organizational communication, communities, and knowledge sharing, distinct from Teams' more team-focused interactions.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Teams
Why this is correct
Microsoft Teams provides chat and channels for communication.
Related concept
Read the scenario before looking for a memorised answer.
Microsoft Viva Engage
Why this is correct
Microsoft Viva Engage is an enterprise social network.
Related concept
Read the scenario before looking for a memorised answer.
Microsoft SharePoint
Why it's wrong here
Microsoft SharePoint is for document management.
Microsoft Stream
Why it's wrong here
Microsoft Stream is for video.
Exchange Online
Why it's wrong here
Exchange Online is for email.
Common exam traps
Microsoft often tests the distinction between collaboration tools by making SharePoint or Exchange Online seem like social networking options, but the trap here is confusing document management or email with enterprise social networking, which requires persistent, community-driven communication features.
Detailed technical explanation
Under the hood, Microsoft Teams uses the Microsoft Graph API for real-time communication via the Teams client, leveraging Azure Communication Services for signaling and media. Viva Engage operates as a separate service with its own graph-based community model, allowing cross-team conversations that are not tied to specific Teams channels. In a real-world scenario, an organization might use Teams for daily project collaboration and Viva Engage for company-wide announcements or employee resource groups, ensuring both targeted and broad social interactions are covered.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
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FAQ
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
The correct answer is: Microsoft Teams — Microsoft Teams is correct because it serves as the primary hub for persistent chat, meetings, and collaboration, integrating enterprise social networking features such as channels, @mentions, and threaded conversations. Microsoft Viva Engage (formerly Yammer) is correct because it provides a dedicated enterprise social network for broad organizational communication, communities, and knowledge sharing, distinct from Teams' more team-focused interactions.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
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