Additionally, you'll want a web hosting service that offers Secure Sockets Layer (SSL) if you plan to sell products. Here's why: An SSL connection encrypts the data that travels between your site and users' web browsers, thus safeguarding the transmission of purchasing information. You've probably seen a green padlock in your web browser's address bar while logging into your online bank account or making online purchases. It's a symbol of trust. Some companies include a free SSL certificate when you sign up for a hosting plan, while others charge close to $100. You can save some money by shopping around for the services that offer the cheapest SSL plans.
Availability, price and employee familiarity often determines which operating systems are offered on dedicated servers. Variations of Linux and Unix (open source operating systems) are often included at no charge to the customer. Commercial operating systems include Microsoft Windows Server, provided through a special program called Microsoft SPLA. Red Hat Enterprise is a commercial version of Linux offered to hosting providers on a monthly fee basis. The monthly fee provides OS updates through the Red Hat Network using an application called Yum. Other operating systems are available from the open source community at no charge. These include CentOS, Fedora Core, Debian, and many other Linux distributions or BSD systems FreeBSD, NetBSD, OpenBSD.