Can we run multiple websites on the EC2 server with one Elastic IP address?

Hi,

Yes, it is possible: see for example https://medium.com/hackernoon/how-to-run-multiple-apps-on-a-single-ec2-instance-with-nginx-and-map-your-custom-domain-2640630ce1e7 for a way to do it.

Best,

Didier

This is not AWS specific. This is how do webservers work 101..

You have to setup your HOST HEADER on your WebServer which directs HTTP requests to the correct folder/location on the webserver

IIS

https://help.nicelabel.com/hc/en-001/articles/4405121487633-Using-host-header-names-to-access-Web-Applications-site#:~:text=Microsoft%20Internet%20Information%20Services%20(IIS,site%20to%20an%20IP%20address.