What's the use of ScriptModule in IIS?

Question

By default IIS loads ScriptModule which has rather concise description. I consider removing all unneeded modules from my ASP.NET application.

How do I know if this module is necessary for my application functioning? What does it actually do?

Answer 1

It is required to have the ASP.NET AJAX (the AJAX support in WebForms) infrastructure working properly. It provides three features required by the framework:

• Allowing page redirection in a partial page update.
• Being able to call page methods instead of web service methods.
• Skipping the standard authorization mechanism for ScriptResource.axd and authorization web service (by setting the SkipAuthorization property of the HttpContext to true)

If you are not using any of above features from ASP.NET AJAX you can remove it.