Microsoft Office Live allows users to share Office documents, photos, and other files online through a web interface at office.microsoft.com. Users can upload existing files or create new ones without purchasing Office software. Shared files are stored in 25GB of cloud storage, and the file owner controls permissions to determine who can view or edit specific content. This enables both synchronous and asynchronous collaboration across browsers at no cost, though an existing Windows Live ID is required to keep files private.