Recommended Amazon AWS Setup for MVCv1 application?

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http://serverfault.com – What is the best performance setup for hosting an ASP.NET MVCv1 application? I currently have 2 micro instances running, one to serve the database and another to serve the MVC application itself. App server is Windows Server 2k8 32-bit, IIS 7.5. Database server is Windows 2008 Datacenter 32-bit, Sql Express. Not more than a handful (less than 10) users on at a time, and by looking at the AWS monitoring, the database CPU hits 100% usage occasionally, but the app server CPU runs at 100% nearly half the time. As you would imagine, this is hurting performance for the users. What is a better s (HowTos)