cfml

I am looking for some suggestions about dynamically writing the web.config file. 
In the application onstart, can I call my function to build this file?

We have many clients and 3-10 rules for each.  Right now, we have a huge web.config in our application root folder. It became this big over the years with rules related to all clients in one file.

I've never tried that, nothing to contribute, just hello.
(we used to work together)

I think it is possible, although I have never tried something likes this.
• Dynamically writing the file, sure it is quite easy
• Restart your IIS site so the new web.config take effect. Yes, I think you can use something likes cfexecute to run some windows command to restart the IIS site

But if you are talking about a "dynamic evaluated" web.config file based on what "site/domain" it is running, then I doubt there is something likes this