As per the recent announcement in the AWS:EC2 forums, Amazon Web Services has beefed up their support of Windows 2k3, adding an additional availability zone in the U.S. as well as extending support via two availability zones to EC2:EU.
This is /fantastic/ news for AWS customers in the U.S. and Europe as it's now possible to build fault tolerance into your Windows Server-based applications in both data centers that spans multiple availability zones, providing greater assurance against total system failure as a result. Simply put, if one availability zone loses contact with the outside world or in other forms fails -- either partially or completely -- your EC2-based Windows applications that span multiple availability zones, and have proper fail over mechanisms in place, will continue to be available regardless.
A copy of the same announcement linked to above follows inline below.
Dear AWS Developer,
We are excited to announce several new features for the Amazon EC2 European Region. Starting today, you can launch Amazon EC2 running Windows or SQL Server instances in the EU Region, enabling you to locate your Windows computing resources close to your European customers/partners, as well as to other AWS computing services (e.g. Amazon S3, Amazon CloudFront, etc.). Pay-as-you-go pricing for Amazon EC2 running Windows Server in the EU Region begins at $0.135 per compute hour.
To make it even easier to get started and to manage Amazon EC2, the AWS Management Console has been extended to the Amazon EC2 European Region and provides the same features as in the U.S. Region, including provisioning and managing Linux/UNIX and Windows instances, Amazon EBS volumes, and Elastic IP addresses.
Finally, Amazon EC2 has also launched an additional Availability Zone for Windows instances in the U.S. Region, making it possible for you to build Windows-based systems that are resilient to failure in a single location.
We are excited to share these new features with you and invite you to visit the release notes for more information about this announcement.
The Amazon EC2 Team