Microsoft Word Online is a web-based version of the popular word processing software, Microsoft Word. It allows users to create, edit, and share documents directly from their web browsers without needing to install any software. This makes it accessible from any device with internet access, including computers, tablets, and smartphones. With Microsoft Word Online, users can collaborate in real-time, meaning multiple people can work on the same document simultaneously. It also offers essential features like formatting tools, templates, and cloud storage through OneDrive, ensuring that documents are saved and easily retrievable from anywhere.