Office 365

Microsoft SharePoint is a family of software products developed by Microsoft for collaboration, file sharing, and web publishing.

Microsoft Active Directory provides a common interface for organizing/maintaining data and controlling access to users based on security policies.

Instant Messaging (IM) allows real-time communication with contacts. 

End User Compute and Collaboration is a holistic approach to managing all of the personal computing devices within an organization, including laptops, tablets, and mobile phones.

Email (electronic mail) is a means of transmitting computer-based messages over a network, typically the Internet. Today's email programs are often bundled with other tools designed to improve collaboration, such as calendars, contact lists, and task lists.