SEO Chat, “Load Balancing and Failover Improve Hosting”
“Everyone wants their traffic to go viral, but most dont realize that if they do get mentioned on a major site or go viral on social media their hosting company is likely to take their site down. When this happens, they lose the benefit of having gone viral!
The reason for this is traffic limits on almost every hosting solution. If you go over your traffic limit, some hosting companies may charge you for the overage while others will immediately take your site offline.
This is only one disadvantage of typical hosting plans. Another is server failure. Your site is typically hosted on only one server. If that server has a hard drive head crash or any other technical failure your site goes down.
Content Delivery Network
By using a Content Delivery Network (CDN) also known as a Content Distribution Network, your site is hosted on multiple servers in diverse locations. This is the ultimate protection against technical failures, power outages, and internet slowdowns…”