There are two main factors that make a dedicated server different from a cloud instance. First is the raw performance of your machine: there is no virtualisation layer consuming resources on a dedicated server, so you are guaranteed full use of the physical resources. Second is the level of freedom you get when managing your server. With a dedicated server, you manage everything from its configuration to the data hosted on it, and you're also responsible for ensuring its security. This way, you have full control, and can dedicate all of your server's resources to a single purpose, which is essential for certain business software applications, for example. The main benefit of a dedicated solution is the total freedom you get as a user. However, if you prefer to avoid technical constraints and focus solely on your project, an OVH Public Cloud instance might be a better choice for you.
Depending on your needs, Namecheap offers 3 types of Server Management: User-Responsible, Basic, and Complete. User-Responsible requires that the user takes full responsibility for server management. Basic is where core services are monitored by Namecheap with a proactive response if unexpected server failure occurs. Complete is where Namecheap runs and manages all server, software, and component services. Keep in mind Basic and Complete Managements are only available to those who have operating systems CloudLinux or CentOS and cPanel installed.
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.