The operating system itself does not limit the number of websites you can host on an Arch Linux system but depends on various factors. Here are the factors that can influence the number of websites you can host on an Arch Linux server are:
Hardware resources
The server's CPU, RAM, storage, and other hardware resources significantly determine the number of websites you can host. As the number of websites increases, the demand for resources grows, and the performance of each site may be affected. You must ensure that your server has sufficient resources to manage the traffic, database queries, and other tasks associated with hosting multiple websites.
Web server software
Arch Linux supports popular web server software like Apache, Nginx, and Lighttpd, which can be used to host multiple websites. These web servers allow you to configure virtual hosts, enabling the server to host multiple websites on a single IP address. The configuration and performance of the web server software will influence the number of websites you can host.
Network capacity
The server's capacity, including the available bandwidth and connection speed, will impact the number of websites you can host. Higher network capacity allows for more simultaneous connections and better performance for each website.
Website requirements
The specific requirements of each website, such as the amount of traffic, the complexity of the web applications, and the use of resources like databases and multimedia, will determine the overall capacity of your Arch Linux server. More resource-intensive websites will limit the number of sites you can host on a single server.