The document discusses a university in Hong Kong migrating its 38,500 staff and students from 4 legacy email systems to Microsoft Office 365. This will provide a unified communication platform with benefits like intuitive interfaces, mobile access, large mailboxes, and cost savings of over $2 million annually. By the first quarter of 2013, all staff and students will be using Office 365's Exchange Online for email and calendaring, with plans to also adopt Lync Online and SharePoint Online. The university expects this transition to Office 365 to support greater collaboration, efficiency, and sustainability across its operations.