Your website is not hosted on one or two servers. Instead, it can access the whole platform’s resources: multiple servers. And we always keep dedicated resources in reserve to cope with traffic.
When your website receives huge load, its instantly and seamlessly placed into a dedicated server so that it can do what it needs to do without any limitations. You're getting access to this dedicated servers power at no extra cost, no one else goes to this extent to keep your site fast and resilient!