office 365 questions

Difference between office and office 365
Office is productivity software (including Word, PowerPoint, Excel, Outlook, and OneNote) that is installed on your desktop or laptop computer. Office 365 is an online subscription service that provides email, shared calendars, the ability to create and edit documents online, instant messaging, web conferencing, a public website for your business, and internal team sites—all accessible anywhere from nearly any device.
Customers with Office 2010 installed on their computer can quickly configure their software to work with Office 365. These users can easily retrieve, edit and save Office docs in the Office 365 cloud, co-author docs in real-time with others, quickly initiate PC-to-PC calls, instant messages and web conferences with others.
Office 365 is also compatible with Office 2007 and newer editions of Office and select Office 365 plans include Office Professional Plus.

What is cloud?
The cloud is a friendly way of describing web-based computing services. Information storage, Computation, and software are located and managed remotely on servers owned by Microsoft.
How many users does office 365 support?
Office 365 is scalable and can support everyone from a one-person business to companies with tens of thousands of users. Office 365 for small business (Plan p1) is best for companies.
NAPA Tools
New toolset called “Napa”, which is the easiest way to start building apps for the new Cloud App Model.
“Napa” is a free app for SharePoint. Since “Napa” is web based, you don’t need to install anything on your machine to start developing for Office and SharePoint. Just fire up your browser and start coding. As your application matures and you need more advanced tools, you can seamlessly switch to the more powerful, fully featured Visual Studio IDE, and continue developing there.
Drawbacks of office 365
1. Storage. It’s more expensive per gigabyte.
2. Service Level Agreement. Microsoft offers a lower SLA than most top-tier hosting companies. They do not guarantee 99.999% uptime.
3. Comprehensive. An organization may not need or want all of the features offered – or the cost that comes with it.
4. Features/functionality limitations. In comparing the on-site and online versions of SharePoint, an organization might find that the limitations of the latter are a deal-breaker.
5. Impersonal hosting relationship. Microsoft is the hosting provider, and it will be challenged to match the rewarding, personalized experience that organizations often have with a smaller hosting provider – one who blends seamlessly into the organization’s own IT staff.
6. Loss of flexibility and control. An organization can keep its on-premise infrastructure, and using the hybrid capabilities, still deploy Office 365 in the cloud.