"This year cloud computing went mainstream, and the conversations moved beyond "this is a way to cut costs" to "this is a better way to run my business." While many IT vendors have now adopted (or co-opted) the term “cloud computing” to describe a wide variety of technologies, most don’t deliver on the true promise of the cloud. Hosting single-tenant server products in a data center is not cloud computing. Nor is requiring customers to install thick client software. These solutions lock-in customers to multi-year release cycles, leave them with the significant costs of managing client software, and expose sensitive data on insecure devices."
You can read the complete Google Enterprise blog post here