Three Layers of the Cloud

We hear about the cloud and cloud computing.  But did you know?…

“The ‘cloud of clouds’ has three distinct layers.  The outer one called ‘software as a service’ (SaaS), includes web-based applications such as Gmail, Google’s e-mail service, and Salesforce.com, which helps firms keep track of their customers….Going one level deeper, there is ‘platform as a service,’ (PaaS), which means an operating system living in the cloud.  Such services allow developers to write applications for the web and mobile devices.  Offered by Google, Salesforce.com and Microsoft, this market is also fairly easy to measure, since there are only a few providers, and their offerings have not really taken off yet….The most interesting layer—the only one that really deserves to be called ‘cloud computing,’ say purists—is infrastructure as a service (IaaS).  IaaS offers basic computing services from number crunching to data storage, which customers can combine to build highly adaptable computer systems.”  Market leaders are GoGrid, Rackspace and Amazon Web Services.  Amazon is by far the market leader, owning about 80 to 90% of the current capacity.  The cloud is estimated by Forrester Research to grow to $56 billion in 2020 from about $1 billion in 2010.           

from Threes, Chapter 8, “Threes in Business and Technology” 

Read more about the Cloud in my new Kindle mini-e-book, Threes in Business and Technology, that’s available now at Amazon.