MS-900 Real-time co-authoring Practice Question
A marketing team needs to collaborate on a campaign document in real time and track changes. Which Microsoft 365 app should they use?
⚠ Common exam trap
MS-900 often tests the confusion between the collaboration platform (Teams, SharePoint) and the authoring application (Word), so candidates pick Teams or SharePoint thinking they handle document editing and track changes.
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
✓
Word
Microsoft Word is the application designed for creating and editing documents with real-time co-authoring and built-in track changes, which is exactly what the marketing team needs for a campaign document. Word supports simultaneous editing by multiple users and provides a full revision history with accept/reject change tracking. This makes it the correct choice for document collaboration with change tracking.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Teams
Why it's wrong here
Teams provides chat, meetings and file sharing but its document editing surface is the attached Word file; the tracked-changes requirement is met by Word, not Teams itself. Word delivers real-time co-authoring with Track Changes and comments. Teams is correct for hosting the collaboration channel around the document.
- ✓
Word
Why this is correct
Word supports real-time co-authoring and built-in tracked changes, directly meeting the marketing team's need to collaborate simultaneously on the campaign document while recording revisions. Unlike SharePoint or Teams, which host and share files, Word provides the document editing and change-tracking functionality the scenario requires.
- ✗
OneNote
Why it's wrong here
OneNote stores free-form notebooks, not documents with tracked revisions and comments, so it cannot satisfy the change-tracking requirement. Word supports real-time co-authoring plus Track Changes and comments. OneNote is correct for shared meeting notes and unstructured research capture, not campaign document review.
- ✗
SharePoint
Why it's wrong here
Real-time co-authoring with tracked changes and inline commenting is Word's function; SharePoint hosts the file but editing occurs in the app. SharePoint is tempting because it provides the document library, versioning and team access, and would be the answer if the requirement were storage, permissions or site-based sharing rather than live editing.
Go deeper
Related to this question
Learn chapter
Power Apps: Low-Code Application Development
Key term
Collaboration
Collaboration in Microsoft 365 refers to the integrated tools and services that enable people to work together in real time, share information, and coordinate tasks from anywhere.
Key term
Microsoft 365
Microsoft 365 is a subscription-based cloud service from Microsoft that combines productivity tools like Office apps with security, device management, and online storage.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This MS-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-900 exam.