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On April 5th Microsoft announced that two more U.S.-based Windows Azure datacenters, went online to its Azure cloud customers. While not giving geographic details, it is implicit from previous discussions that one is somewhere in the western part of the country and the other, in the East. Microsoft is known to have picked West Des Moines, Iowa, as one of its new Azure data centers locations, possibly the other one maybe the Southern Virginia location as the new Eastern one.
New Programs: Sql Azure
Compute and storage resources are available in both the “West US” and “East US” locations. In addition to the new locations Microsoft plans to add SQL Azure to the two datacenters “in the coming months.” The two new datacenters already are visible in the Azure Management Portal.
SQL Azure is a scalable cloud database service built on SQL Server technologies. With SQL Azure, developers do not have to install, setup or manage any database. The high availability and fault tolerance features are built-in and have no physical administration required. SQL Azure is a managed service that is operated by Microsoft and has a 99.9% monthly SLA. This programming feature helps to make the Azure locations standout. That plus the two new data centers make the US footprint larger.
In the figure below, you can see the world ▼ wide distribution of Azure Data Centers.
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This figure only shows two data centers in the US, but with the new announcement, there are four.
For its part, Microsoft is usually secretive about the actual geographical locations of it data centers, citing security reasons, but some are already known, like the one in San Antonio, Texas. The other known locations are Chicago, Illinois; Amsterdam, The Netherlands; Dublin Ireland; Hong Kong, and Singapore.
Source Window Azure