What is Office 365?
"Office 365" refers to subscription plans that include access to Office applications plus other productivity services that are enabled over the Internet (cloud services). ... The fully installed applications include: Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access.
What is the cloud?
“The cloud" is a friendly way of describing web-based computing services that are hosted outside of your organization. When you use cloud-based services, your IT infrastructure resides off your property (off-premises), and is maintained by a third party (hosted), instead of residing on a server at your home or business (on-premises) that you maintain. With Office 365, for example, information storage, computation, and software are located and managed remotely on servers owned by Microsoft. Many services you use every day are a part of the cloud—everything from web-based email to mobile banking and online photo storage. Because this infrastructure is located online or “in the cloud,” you can access it virtually anywhere, from a PC, tablet, smartphone, or other device with an Internet connection.