Dedicated hosting is very different from shared hosting and VPS. With dedicated hosting, you have a hardware solution for yourself.
Whether you have only one site to host, or multiple sites, you can be sure, that your website is not sharing the server's resources or space with anyone.
But the downsize is, that you also don’t share the cost with anyone. For this reason, dedicated hosting is very reliable, which makes it ideal for high-performance websites or websites used by large corporations.
It is not a cheap solution, but for this size of business you can get a real bang for your buck.