An interesting article from the Burton Group, when it comes to cloud providers. The article states that the cloud providers do not include network services or user performance in their SLA’s while these are considered to be valuable assets towards the Enterprise.
These metrics allows them to evaluate the provider and make the right tradeoffs between performance and cost by moving applications and teams in the cloud.
The remainder of the article explains in defending and explaining why these metrics should be defined and measured accordingly.
Original Article: http://www.burtongroup.com/Client/Research/Document.aspx?cid=2066