Sunday, July 29, 2012

Cloud SLAs: Present and Future

If your company leverages cloud computing, you should take a look at my recent article, titled, "Cloud SLAs: Present and Future", that appeared in the July 2012 issue of ACM Operating System Review. In this article, I describe SLAs of major cloud providers such as Amazon, Rackspace, Microsoft Azure, Terremark, and Storm on Demand. Key findings are that none of the providers guarantee performance and instead provide some notion of availability. However, the notion of availability varies across cloud providers. EC2, a popular cloud, only guarantees availability on a data center instead of a VM! When you are building an application, it may serve you well to read the SLAs of cloud providers.

I make the job easier for you :). Here is a link to my paper and presentation. I also provide guidance on how SLAs should be designed for future cloud services.

Saturday, July 14, 2012