Microsoft Office 365

Microsoft Office 365 is a stack of services that include:

Office – Local installs on up to 5 devices
OneDrive – Cloud file storage up to 1TB per user
Exchange Online – 50GB mailbox hosted by Microsoft
SharePoint Online – Central document repository for the organisation
Skype for Business – instant messaging and conferencing
Power BI – Data analytics and dashboards
Project Online
Visio Online – diagramming
Microsoft Teams

These subscriptions are licensed per user, and can be bought individually, or through value bundles