SharePoint Online

Cloud-based service, hosted by Microsoft, for businesses of all sizes. Use Microsoft SharePoint to create websites. You can use it as a secure place to store, organize and share information and access it through any device. All you need is a web browser, such as Microsoft Edge, Internet Explorer, Chrome or Firefox. With this service you can share documents and information with colleagues, partners and customers.

More information - SharePoint, Team Collaboration Software Tools (microsoft.com)