What is the difference between Web and Worker Roles in Windows Azure?
As you know the main difference between the two is that an instance of a web role runs IIS, while an instance of a worker role does not. Bo...

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As you know the main difference between the two is that an instance of a web role runs IIS, while an instance of a worker role does not. Both are managed in the same way, however, and it’s common for an application to use both.For example, a web role instance might accept requests from users, then pass them to a worker role instance for processing.