Describe Microsoft 365 apps and services →mediumMultiple Select

MS-900 Describe Microsoft 365 apps and services Practice Question

Which TWO Microsoft 365 services allow users to collaborate in real-time on the same document?

⚠ Common exam trap

The trap here is that candidates often select Microsoft Teams as a correct answer because it is a collaboration tool, but Teams itself does not provide real-time document editing—it merely hosts files that are stored in SharePoint or OneDrive, where the actual co-authoring happens.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

SharePoint Online

SharePoint Online and OneDrive for Business both support real-time co-authoring, allowing multiple users to edit the same document simultaneously. This is enabled by the Office Online Server infrastructure and the use of WebDAV and REST APIs to synchronize changes in near real-time. Co-authoring works in Word, Excel, and PowerPoint files stored in these services, with conflict resolution handled by the application.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
SharePoint Online
Why this is correct
SharePoint Online is a cloud-based collaboration platform that stores documents in team libraries. Multiple users can co-author these documents in real time using Office for the web, desktop apps, or mobile apps, with version history and presence indicators. It enforces granular permissions and metadata, enabling organization-wide shared editing on a single source of truth.
✓
OneDrive for Business
Why this is correct
OneDrive for Business provides personal cloud storage in Microsoft 365, but any file it stores can be shared with specific people or groups, enabling real-time co-authoring through the same Office collaboration engine as SharePoint. Unlike SharePoint's team-centric libraries, OneDrive gives the file owner personal control over sharing links, expiration dates, and access permissions while still allowing simultaneous edits by multiple users.
✗
Microsoft Viva
Why it's wrong here
Microsoft Viva is an employee experience platform that aggregates communications, learning, wellbeing, and knowledge insights into an intranet-style experience, often surfaced inside Teams. It does not provide a storage or file-editing service, so it cannot be considered a service that permits users to collaborate on documents. Its purpose is engagement and enrichment, not the shared editing of content.
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Yammer
Why it's wrong here
Yammer is an enterprise social networking service designed for organizational conversations, announcements, and community building across the company. Users can attach files to posts, but those attachments are typically opened through other services (like Office apps) and Yammer itself does not support real-time co-authoring of the underlying documents. Its collaborative value lies in discussion and knowledge sharing, not in synchronous file editing.
✗
Microsoft Teams
Why it's wrong here
Microsoft Teams is a chat-based workspace that centralizes conversations, meetings, and calls, and it integrates with SharePoint and OneDrive for file access within a team's channels. However, when users co-edit a document from a Teams tab, the actual document collaboration is happening in SharePoint Online or OneDrive via Office apps; Teams itself does not provide the document co-authoring capability. Thus it is a hub that surfaces collaboration, not the service that enables the underlying co-authoring.

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MS-900 Describe Microsoft 365 apps and services Practice Question

Why each option matters

Option-by-option breakdown

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