Microsoft Exchange Online
Microsoft Exchange Online offers cloud-hosted email, calendar, and contacts. With Exchange Online, you run your email on globally-redundant servers, protected by built-in antivirus and anti-spam filters and backed by 1st Level Support from iXiZ and 24 x 7 Email Support or Telephone Support by Microsoft
Microsoft Office Professional Plus
Get the latest Microsoft Office Professional (Word/Excel/Powerpoint/Outlook/OneNote/Publisher) for each of License you had purchased. Microsoft Office Professional Plus is the most complete productivity experience. You get the latest versions of familiar Office applications and Office Web Apps, so you can create, store, and edit Office documents from virtually any device using a web browser.
Microsoft SharePoint Online
Sync documents with your Teams online. SharePoint Online gives you a central place to share documents and information. Designed to work with familiar Office applications, SharePoint lets you work together on proposals and projects in real-time because you have access to the documents and information you need from virtually anywhere.
Microsoft Lync Online
Apart from Skype, How about Internal MSN kind of Messaging & Communication? Microsoft Lync Online is a next-generation cloud communications service that connects people in new ways from anywhere by using presence, instant messaging, PC-to-PC calling, and rich online meetings with audio, video, and web conferencing.
Microsoft Office Web Apps
Edit your documents Online – Office Web Apps are convenient online companions to Microsoft Word, Microsoft Excel, Microsoft PowerPoint, and Microsoft OneNote that offer you an easy way to access, view, and edit documents directly from your web browser.