User maximum | | 50,000+ | | 50 | | 50,000+ | | 50,000+ | | 50,000+ | | 50,000+ |
Cloud-based email
25GB of storage space per user | |  | | | | | | | | | | |
Contact and calendar sharing | | | | | | | | | | | | |
Intranet site for your team | | | | (1 subsite) | | (up to 300 subsites) | | (up to 300 subsites) | | (up to 300 subsites) | | (up to 300 subsites) |
IM, PC-to-PC calling, and video conferencing | | | | | | | | | | | | |
Hosted website for your business | | | | | | | | | | | | |
Create and edit Word, PowerPoint, Excel and OneNote files online | | | | | | (View only) | | | | | | |
Premium antivirus and anti-spam filtering | | | | | | | | | | | | |
Configurable anti-spam filtering | | | | | | | | | | | | |
Microsoft community support | | | | | | | | | | | | |
Live 24 x 7 phone support
for advanced IT support issues | | | | | | | | | | | | |
Active Directory integration | | | | | | | | | | | | |
Advanced voice
Hosted voice mail support with auto attendant capabilities | | | | | | | | | | | | |
Advanced mail
Email archiving capabilities, 'legal hold', and unlimited email storage | | | | | | | | | | | | |
Subscription to desktop version of Office Professional Plus 2010 | | | | | | | | | | (For up to 5 devices per user) | | (For up to 5 devices per user) |
Enterprise voice capabilities
Replace or enhance a PBX with Lync Server on-premises | | | | | | | | | | | | |
