Office is the old classic that you are familiar with but with a web based kicker...
Exchange and Outlook were built for maximum compatibility offering features when used together that you can't get when used separately.
Exchange is awesome but its not cheap!
Conservative cost approximation for a small business with 20 users
Conservative cost approximation for managed I.T. services ex. software version upgrades
Subscription costs for a small business with 20 users on Office 365 Small Business Premium
Automatically sync all of your files back and forth between computers and mobile devices with OneDrive for Business installed.
Making a change to one of these documents within OneDrive on a device (Desktop, Laptop or Mobile) will be synchronized across all linked devices and your Microsoft Office 365 Cloud Storage within SharePoint.
All your notes on all your devices - set up multiple notepads, add sections within each notepad, then add pages within each section.
The layout and format is completely flexible, adding bullet points or tables is as simple as a click, you can even drag in other types of content and attach for reference or for other use this includes images, videos, and sound files.
SharePoint is a file storage section - Think of it as a cross between a document management system and a file server in the Cloud. You can set up document libraries. You can set up folders. Share team documents and track project milestones, provide all team members (internal and external) online access to critical information, and control permissions – like who can access, read and share documents and information.
This is where it gets exciting! You can edit documents online, within your web browser, at the same time as another person. Using the online applications for both Word or Excel or whichever online application you wish to use.
Editing documents in real time with another person, you see their changes as they type and they see yours, and all of this within a web browser so you don’t even need the Microsoft Office applications installed on your computer (although still works if you do).
Lync is Microsoft’s Quality Business Grade version of Skype. You can instant message, video conference (in high definition), you can even share content in real time and collaborate on those files in real time too.
With Lync you’re not just limited to one person, you can have multiple people, see each other’s video feeds, share content with multiple people. Lync can be used as a webinar platform to run your own online meetings or webinars, and can be completed with organizational staff and external people also.
Work seamlessly together with colleagues and contractors to provide the the most productive and efficient outcomes on PCs, laptops and mobile devices...
With the Office 365 service it’s Microsofts responsibility to keep your data safe and secure. It’s your data. You own it. You control it. And it is yours to take with you if you decide to leave the service...
Office 365 requires Windows 7 or 8. Mac users need OS X 10.6 (or later). You'll also need Internet access to install Office 365 and to activate and manage your subscription (once a month). You'll need a compatible browser. IE 9, Firefox 12, Safari 5, or Chrome 18. Regarding hardware, at the very least, your local system will need the following.
Users with older systems may face significant upgrade costs to move to Office 365.
Office 365 runs offline. You must connect to the internet every 30 days to maintain your subscription. Office 365 will let you know when it's time to connect.