Recently, we've added more formal uptime monitoring to our review process, and the results show that most Web hosts do an excellent job of keeping sites up and running. If they don't, they suffer for it in our scoring. Even if they get everything else right, sites with uptime problems aren't eligible for high scores. All services suffer ups and downs, sometimes for reasons beyond their control. Those sites that fail to address the problem are penalized accordingly.
Let’s assume that your web shop sells decorative items of all kinds. You will probably introduce lots of special offers for festive periods like Christmas or Easter. As a result, more email and telephone support will be required. In this case, for security reasons, it is advisable to set up different servers for the products (one for live operations, another for backups) and to connect them using a load balancer. You would then outsource the mail applications to a separate mail server and protect this server with a dedicated firewall.
Bandwidth consumption over the last several years has shifted from a per megabit usage model to a per gigabyte usage model. Bandwidth was traditionally measured in line speed access that included the ability to purchase needed megabits at a given monthly cost. As the shared hosting model developed, the trend towards gigabyte or total bytes transferred, replaced the megabit line speed model so dedicated server providers started offering per gigabyte.
Unlike a shared server, which powers multiple sites, a dedicated server hosts just one site. Website stability and reliability are the twin benefits of investing in a dedicated server—your site leverages a server's full CPU, RAM, and storage resources, as it doesn't share them with other sites. You shouldn't underestimate the importance of these benefits in terms of site speed and reliability. 

There are two main factors that make a dedicated server different from a cloud instance. Firstly, the machine's raw performance is different: there is no virtualisation layer consuming resources on a dedicated server, so you are guaranteed full use of the physical resources. The second difference concerns the level of server administration. With a dedicated server, you manage everything from its configuration to the data hosted on it, and you are also responsible for ensuring that it is secure. It will therefore give you the option of a more advanced installation, which is essential for the use of certain business applications (for example). The main benefit of a dedicated solution is the total freedom you enjoy as a user. However, if you would like to avoid technical management and concentrate solely on your web project, then OVH Public Cloud instances are the best solution for you. Just need to build a simple website? Take a look at our shared hosting solutions, which offer you a hosting platform at an unbeatable cost, with the configuration fully managed by OVH.
A Cloud VPS is an emulation of a computer, also known as a virtual private server, that lives within a parent server and shares resources with other virtual servers. As where a Dedicated Server is a stand-alone, physical server that does not share resources. As with fixed resources, scarcity can lead to less than optimal performance for the resource-intensive application, which is why Dedicated Servers often outperform VPS instances.

A dedicated server, or computing server, is a server where all the physical resources of the machine are available. Unlike a virtual server, which uses a portion of the resources to run its virtualisation technology, a dedicated server allows you to benefit from all of the machine’s available RAM, storage, and computing power. With cloud computing, we can also define this type of solution as "bare metal", highlighting the physical availability of the machine’s resources, in contrast to standard solutions based on virtual instances.