Hello Gaurav,
If you want to monitor IIS as a web server, there is a PowerPack for Web Servers, available in the StandalonePowerPackInstaller, which will be inside the agent installer packages.
There is a documented process for getting this work, including how to configure the script to get performance metrics for IIS.
The agent can run locally or remotely to the web server, it just needs to be somewhere that can make HTTP requests to IIS.
Thanks,
David