How Copilot works across Word, Excel, Outlook and Teams
What each app's Copilot is good at, where it struggles, and how it uses the content you already have access to.
Read →Plain-English summaries of what changed, hands-on guides, and prompts you can copy and use across Microsoft 365, GitHub, Windows and Copilot Studio.
Grouped by product so you can skip what you don't use.
What each app's Copilot is good at, where it struggles, and how it uses the content you already have access to.
Read →Using Copilot to explain diffs, suggest tests and catch edge cases, plus where human review still matters most.
The everyday tasks it actually speeds up, the keyboard shortcuts worth learning, and the settings to check first.
From a blank canvas to a working agent: topics, knowledge sources, actions and how to test before you publish.
Copilot surfaces what users can already reach. Why oversharing reviews and sensitivity labels come before rollout.
Read the guide →Repository-level instructions, coding conventions and examples that make suggestions fit your codebase.
Core concepts that make every Copilot product easier to use.
Give a goal, context, source and expected format. Specific asks get specific answers.
Read guide →Point Copilot at the right file, thread or meeting so answers come from your content, not guesses.
Read guide →Check citations, numbers and names. Treat drafts as drafts until a person has reviewed them.
Read guide →Permissions, labels and retention policies decide what Copilot can see. Get them right first.
Read guide →Tested starting points. Swap in your own details.
Summarize this meeting in 5 bullet points. Then list every action item with its owner and due date in a table. Flag any decisions that were left open.
Review my unread email from the last 2 days. Group it into: needs a reply today, FYI only, and can wait. For "needs a reply," draft a one-line response for each.
Look at this table and identify the three biggest trends. Suggest one chart that best shows each, and add a formula column calculating month-over-month change.
Write unit tests for the selected function. Cover the happy path, empty and null inputs, and boundary values. Use the existing test framework and naming style in this repo.
A short history of the Copilot brand.
AI pair programming arrives in the editor and introduces the "Copilot" name. Original announcement
Copilot is announced for Microsoft 365 apps, Windows and Bing, and the brand broadens beyond code.
Organizations gain tools to build their own copilots and agents grounded in business data.
Copilot moves from answering questions toward taking multi-step actions on your behalf.
The documentation and blogs we check before we write.