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.
A sales team needs to collaborate on a document in real time and track changes. Which Microsoft 365 app is most suitable?
OneNote
Why wrong: OneNote is for note-taking, not real-time co-authoring of documents.
Microsoft Forms
Why wrong: Forms is for surveys and quizzes, not document editing.
Word for the web
Word for the web supports real-time co-authoring and track changes.
Microsoft Teams
Why wrong: Teams is for communication and collaboration, not document editing.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Word for the web
Word for the web (Option C) is the most suitable app because it is specifically designed for real-time co-authoring, allowing multiple users to edit a document simultaneously while tracking changes via the built-in version history and 'Track Changes' feature. Unlike desktop Word, the web version requires no manual sync and leverages Microsoft's Fluid Framework for seamless collaboration across devices.
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.
OneNote
Why it's wrong here
OneNote is for note-taking, not real-time co-authoring of documents.
Microsoft Forms
Why it's wrong here
Forms is for surveys and quizzes, not document editing.
Word for the web
Why this is correct
Word for the web supports real-time co-authoring and track changes.
Related concept
Read the scenario before looking for a memorised answer.
Microsoft Teams
Why it's wrong here
Teams is for communication and collaboration, not document editing.
Common exam traps
The trap here is that candidates often confuse Microsoft Teams as a document collaboration tool because it displays files, but Teams relies on Word for the web for actual editing; the question specifically asks for the app that enables real-time editing and change tracking, which is Word for the web, not Teams.
Detailed technical explanation
Under the hood, Word for the web uses the Fluid Framework's shared data structures (e.g., Fluid sequences) to synchronize edits in near real-time via WebSocket connections, with conflict resolution handled by Operational Transformation (OT) algorithms. A subtle behavior is that 'Track Changes' in Word for the web only shows changes made by others when the document is saved to OneDrive or SharePoint; unsaved edits are merged automatically without explicit tracking. In a real-world scenario, a sales team drafting a proposal can see each other's cursor positions and edits instantly, while the 'Version History' pane (stored as .docx file versions in SharePoint) provides a full audit trail of changes.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
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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: Word for the web — Word for the web (Option C) is the most suitable app because it is specifically designed for real-time co-authoring, allowing multiple users to edit a document simultaneously while tracking changes via the built-in version history and 'Track Changes' feature. Unlike desktop Word, the web version requires no manual sync and leverages Microsoft's Fluid Framework for seamless collaboration across devices.
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 24, 2026
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