System Center Orchestrator is the next release of what was formerly called Opalis.
It is a radical departure from the original codebase which was built in a combination of Java/JBOSS and Open Source components. Rewritten to leverage .NET and Silverlight in particular for console activities and designed against Microsoft’s Common Engineering criteria, this promises to be a refined product with great opportunity for datacenters looking to automate processes reliably and securely.
A listing of all the changes made in the BETA are available here:
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Kurt Shintaku's Blog 