It is hard to pin a description on Google. Google is a noun; Google is a verb.
It is loved. It is hated. And everything in between.
To more than a handful of people, Google is the Internet.
Regardless of your opinion of Google, the organization is an enormous publisher and maintainer of software.
This book offers a look at the way in which Google creates, and importantly maintains, many of the staples of our connected experience. This is an enjoyable read for programmers, both for the professionals and for the rest of us.