The Office suite for PC and Mac with apps for tablets and phones, plus email, instant messaging, HD video conferencing, unlimited personal file storage and sharing, and available add-ons like PSTN calling.
To use Microsoft services, you must:
Create a Microsoft Account (formerly Windows Live ID) for your organization if you don’t have one.
Microsoft Customer Agreement
Customers must understand and accept the Microsoft Cloud Agreement (MCA), including acceptable use of the Microsoft products and services.