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 allow users to collaborate in real-time on the same document?
SharePoint Online
Documents stored in SharePoint can be co-authored in real-time.
OneDrive for Business
OneDrive files can be co-authored in real-time with Office apps.
Microsoft Viva
Why wrong: Viva focuses on employee engagement and learning.
Yammer
Why wrong: Yammer is an enterprise social network.
Microsoft Teams
Why wrong: Teams is for chat and meetings, not document co-authoring.
Answer choices
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.
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.
SharePoint Online
Why this is correct
Documents stored in SharePoint can be co-authored in real-time.
Related concept
Read the scenario before looking for a memorised answer.
OneDrive for Business
Why this is correct
OneDrive files can be co-authored in real-time with Office apps.
Related concept
Read the scenario before looking for a memorised answer.
Microsoft Viva
Why it's wrong here
Viva focuses on employee engagement and learning.
Yammer
Why it's wrong here
Yammer is an enterprise social network.
Microsoft Teams
Why it's wrong here
Teams is for chat and meetings, not document co-authoring.
Common exam traps
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.
Detailed technical explanation
Real-time co-authoring in SharePoint and OneDrive uses the Office Online Server (formerly Office Web Apps) to render documents in a browser and synchronize edits via a WebSocket-based protocol. The co-authoring feature relies on the 'SharePoint Coauthoring' service and the 'OneDrive Sync Client' to manage merge conflicts and version history. In a real-world scenario, if two users edit the same Excel cell simultaneously, the last save wins unless the file is configured with 'Require Check Out' disabled, which is necessary for co-authoring to work.
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Describe Microsoft 365 apps and services — study guide chapter
Learn the concepts, then practise the questions
Describe Microsoft 365 apps and services practice questions
Targeted practice on this topic area only
All MS-900 questions
985 questions across all exam domains
Microsoft 365 Fundamentals MS-900 study guide
Full concept coverage aligned to exam objectives
MS-900 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise MS-900 questions linked to Describe Microsoft 365 apps and services.
Practise MS-900 questions linked to Describe Microsoft 365 pricing, licensing, and support.
Practise MS-900 questions linked to Describe cloud concepts.
Practise MS-900 questions linked to Describe security, compliance, privacy, and trust in Microsoft 365.
Practise MS-900 questions linked to Describe Microsoft 365 pricing and support.
Practise MS-900 questions linked to MS-900 fundamentals.
Practise MS-900 questions linked to MS-900 scenario.
Practise MS-900 questions linked to MS-900 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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: 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.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 24, 2026
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.