You can't say it much better than Google already did. When you take advantage of Google Apps, you get "Reliable, secure web-based office tools for any size business."
The best part is; these apps are cost-effective replacements for the boring, old, costly office apps that, up until now, you thought you were forced to use. No extra software, no hardware, no maintenance - these are tools that are designed just right, for you. Easy to use and hosted in the clouds, you won't have to worry about a thing.