When you run an e-commerce website and want to have your own SSL certificate for the basics. Then you need to get a dedicated IP address. It's a requirement to get an SSL certificate. If you don't, you'll have to use the free shared SSL, which seems to make it harder for users to pay after they check out. Your online store can't work without a private SSL.
In fact, a dedicated IP address lets people get to your website without typing in the domain name. This gives you an extra advantage in terms of how quickly you can find the website and get the content you want. In the architecture of a large website, each website will have its own IP address. It's not built on a platform with shared IP addresses, which seems to be the "cheap" way to do things. Get a dedicated IP if you want your site to load quickly.
It seems that in the past few months, some ISPs have been blocking certain IP addresses. In particular, China's ISPs have been blocking IP addresses that go to websites for some US hosting providers. Visitors from China can't get to the website because it's been blocked. To do this, you'll need a dedicated IP address, and you'll no longer have to worry about being blocked.
