Content Delivery presentation environment load balancing
Implement load balancing by replicating your website and implementing a load balancer on top of the websites.
If the load on your website machine is getting too heavy, you may want to consider copying the website to multiple machines and directing website visitors to the machine that is least busy. This is known as load balancing.
In a load balancing scenario, Tridion Sites publishes the content to your presentation environment and its database, and you create copies of the website on different machines. So to implement load balancing, you implement the copying of the published website from that machine to your other machines, and implement the load balancing between those machines.