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Different IIS Isolation Levels

Low (IIS Process) → ASP pages run in INetInfo.Exe, the main IIS process, therefore they are executed in-process. This is the fastest setting, and is the default under IIS4. The problem is that if ASP crashes, IIS crashes as well.

Medium (Pooled) → In this case ASP runs in a different process than IIS, which makes this setting more reliable: if ASP crashes IIS won't. All the ASP applications at the medium isolation level share the same process, so you can have a web site running with just two processes (IIS and ASP process)

High (Isolated) → Each ASP application runs out-process in its own process space, therefore if an ASP application crashes, neither IIS nor any other ASP application will be affected. The downside is that you consume more memory and resources

Posted By -	Karan Gupta

Posted On -	Wednesday, June 8, 2022

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