Can you use Elastic Network Interfaces as a way to host multiple websites requiring separate IP addresses on a single instance?
Yes, however, this is not a use case best suited for multiple interfaces. Instead, assign additional private IP addresses to the instance a...

https://www.interviewquestionspdf.com/2017/01/can-you-use-elastic-network-interfaces.html
Yes, however, this is not a use case best suited for multiple interfaces. Instead, assign additional private IP addresses to the instance and then associate EIPs to the private IPs as needed.