Which Microsoft Office product is a note-taking application?

The Microsoft Office product designed for note-taking is Microsoft OneNote.

OneNote was developed as a digital notebook for collecting and organizing information in a flexible, free-form workspace. Unlike a conventional word processor, it lets users place typed text, handwriting, drawings, images, screen clippings, links, and audio recordings on notebook pages. Notes can be arranged into sections and shared for collaboration.

Microsoft released OneNote in 2003, and it later became part of Microsoft Office and Microsoft 365. Microsoft also made the application available as a free standalone product on platforms including Windows, macOS, Android, iOS, iPadOS, and the web. Its cross-device synchronization commonly uses Microsoft's cloud services.

OneNote is sometimes confused with Microsoft Sticky Notes because both can hold brief reminders. Sticky Notes is intended for quick, lightweight notes, while OneNote is structured for larger collections of research, meeting notes, class materials, and project information. Microsoft Word can contain notes and documents, but it is primarily a word-processing application rather than a digital notebook.