Office 365 E3 (Monthly Pre-Paid)
The Office suite for PC and Mac with apps for tablets and phones, plus email, instant messaging, HD video conferencing, 1 TB personal file storage and sharing, and available add-ons like PSTN calling.
Office 365 Business (Monthly Pre-Paid)
For businesses with 1 to 300 users that need the latest desktop Office applications plus online file storage and sharing.
Enterprise Mobility + Security E3 (Monthly Pre-Paid)
Enterprise Mobility + Security E3 provides a convenient cost effective way for customers to purchase Microsoft's end user and device cloud services: Azure Active Directory Premium, Azure Rights Management, & Microsoft Intune.