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My IIS Server already has a website using port 80. This website does not have a Host Header.<br />
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I want to add a 2nd website that also uses port 80 and that looks for host header mysubdomain.domain.com<br />
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Is it possible for both websites to use port 80 in this case?
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My IIS Server already has a website using port 80. This website does not have a Host Header.

I want to add a 2nd website that also uses port 80 and that looks for host header mysubdomain.domain.com

Is it possible for both websites to use port 80 in this case?

IIS Websites sharing same port (80)

A web server refers to the software that helps to deliver web content that can be accessed either through the Internet or through an intranet. The primary function of a web server is to store, process and deliver web pages to clients. The communication between client and server takes place using the Hypertext Transfer Protocol (HTTP). The most common use of web servers is to host websites, but there are other uses such as gaming, data storage, running enterprise applications, handling email, FTP, etc.

Web Servers

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.