If you absolutely need Microsoft databases, ASP, and Windows media you have to go with a Windows host. Otherwise most websites are probably better off with a UNIX host. The advantages of UNIX over Windows include greater choices in web hosts, slightly better reliability, and (sometimes) cheaper hosting costs.
VPS Web Hosting
If your website has outgrown shared hosting, however, VPS offers an affordable alternative to dedicated hosting. When shopping for a VPS host, be sure to find out how system resources are divided up, the number of VPS accounts on each physical server, the method for upgrading, and the choices of operating systems.
So You Want to Start a Web Hosting Company
There are many types of re-seller packages. Some require you to operate under the name of the hosting company while others allow you to set up a shop under your own business name. Pay attention to the billing aspect of the package. Some re-seller accounts have everything you need to get started immediately, while others require you to set up your own billing gateway.
Multiple Domain Web Hosting
Hosting all your sites with one host can offer lots of advantages but there is one major disadvantage if your server goes down, all your sites go down. If you are depending on your sites for income this can be a disastrous situation. For this reason, it is a good idea to have at least one of your sites with a different host. If your sites are essential for your livelihood and you can’t afford any down time whatsoever, you would be advised to host everything with (at least) two hosts.
What Happens from Server to Web Browser
The TCP connection can be kept alive for additional requests from the client. This allows several pages to be requested within a short time period without causing the overhead of opening and closing TCP ports. Either client or server can close the connection at any time.