MS-900 Describe Microsoft 365 apps and services Practice Question
A company with Microsoft 365 E5 wants to use AI to summarize email threads and draft replies automatically. Which Microsoft 365 service provides this capability?
⚠ Common exam trap
Many exam-takers confuse Microsoft Viva Insights (which provides 'insights' and 'suggestions' about work patterns) with AI-powered content generation, or assume Microsoft Editor's grammar suggestions include drafting capabilities, when in fact only Copilot uses generative AI for these tasks.
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
✓
Microsoft 365 Copilot
Microsoft 365 Copilot integrates with Outlook and other Microsoft 365 apps to provide AI-powered email thread summarization and draft reply generation. It uses large language models (LLMs) combined with your Microsoft Graph data to understand context and produce relevant, personalized responses. This capability is not available in other Microsoft 365 services like Viva Insights or Microsoft Editor.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Microsoft Viva Insights
Why it's wrong here
Viva Insights uses AI to analyze workplace patterns and deliver personalized recommendations about time management, wellbeing, and team collaboration, but it does not generate or condense content such as email conversations or documents. Its purpose is to surface behavioral insights and suggest habits, not to create AI-written summaries, so it cannot fulfill a request to summarize information.
- ✓
Microsoft 365 Copilot
Why this is correct
Microsoft 365 Copilot is a generative AI assistant embedded across Word, Outlook, Teams, and other M365 apps that uses large language models and your organizational data from Microsoft Graph to understand context. It can summarize a lengthy email thread, synthesize a meeting's key points, or draft a response in Outlook, making it the proper choice for AI-driven summarization.
- ✗
Microsoft Search
Why it's wrong here
Microsoft Search is a retrieval engine that indexes SharePoint, Exchange, and other M365 content to let users find files, messages, and people via keyword or query, but it only returns links and previews. It does not analyze or condense the content of items; it has no generative capability to produce a summary, so while it can locate a document, it cannot summarize it.
- ✗
Microsoft Editor
Why it's wrong here
Microsoft Editor is an AI-enhanced writing assistive tool that checks spelling, grammar, punctuation, and style, offering rewrite suggestions for clarity and conciseness in documents and emails. It operates on the text you are currently composing, not on existing lengthy documents or conversations, so it cannot generate a new abstract or digest large volumes of content.
Go deeper
Related to this question
Learn chapter
Power Apps: Low-Code Application Development
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.
Key term
Viva
Viva is a Microsoft 365 employee experience platform that helps organizations connect, engage, and develop their workforce through personalized insights, communications, and learning tools.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.