Office 365 ProPlus is the version of Office that comes with many Office 365 plans. It includes Access, Excel, InfoPath, Lync, OneNote, Outlook, PowerPoint, Publisher, and Word.
Project, Visio, and SharePoint Designer aren’t included with Office 365 ProPlus, but are available in some Office 365 plans.
FOPE (Forefront Online Protection for Exchange) is a discontinued cloud service for organizations using Exchange Server or Exchange Online.
Email services provided by FOPE include virus and spam filtering and policy enforcement. FOPE has been replaced by Exchange Online Protection (EOP).
– definition from SearchExchange
In instant messaging, federated IM networks are those that allow communications across different IM clients and platforms, similar to the way e-mail allows people to communicate regardless of which e-mail client they choose to use. Federated IM networks are those which maintain an open directory that allows other IM networks to message their users.
Lync is a communication service that can connect to the people inside and outside your organization. Instant messaging is just the beginning. You can see when your coworkers are online and available. Their presence indicators change color when they are available, in a meeting, on a call or away from their desk. These indicators also show up in Outlook Web App and SharePoint TeamSite. Point to the contact to see more. In the contacts list, you can start an instant message conversation, audio call, high definition video call or schedule a meeting. In the Lync meeting, you can show a Power Point presentation and let participants contribute or take meeting notes that everyone can see.
Short for Software as a Service, SaaS is a software delivery method that provides access to software and its functions remotely as a Web-based service. Software as a Service allows organizations to access business functionality at a cost typically less than paying for licensed applications since SaaS pricing is based on a monthly fee. Also, because the software is hosted remotely, users don’t need to invest in additional hardware. Software as a Service removes the need for organizations to handle the installation, set-up and often daily upkeep and maintenance. Software as a Service may also be referred to as simply hosted applications. See related term ASP.
Definition from: Webopedia