According to the Google Apps website, it "includes dozens of critical security features specifically designed to keep your data safe, secure and in your control. Your data belongs to you, and Apps tools enable you to control it, including who you share it with and how you share it. Our data center network provides exceptional security and guarantees* reliable access to your data, 24x7x365.25 (that’s right: no rest, even on leap years)."
Over 4 million businesses use Google Apps.
What this means for small businesses is that your business can save time and money on information technology. You don't need an in-house IT person to get set up and maintain everything -- you just go online and follow the instructions to get set up. It also enables collaboration at a distance. If team members are located in multiple places, they can still work together sharing documents and calendars. Finally, the Google apps structure makes it easy to share documents and files with customers, business partners and others third-parties.
Nominated by Leland McFarland