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. 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.
Let's take Cloudrino as an example. This Indian startup claims to give you a free VPS. To get it, you need to stay in line - the issue is, the line has apparently, over 230 thousand users in it. And it's not moving very fast! However, to get ahead of the line, you can invite your friends to join the line as well. Like that, you can jump some positions.
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. 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 in a timely manner are penalized accordingly.
VPS is short for a Virtual Private Server, which refers to the partitioning of a physical server into multiple servers. You can think of a VPS like a Dedicated Server, where you can enjoy all the components a Dedicated Server offers yet you pay a lower price. Each VPS also features its own OS (Operating System) and allows for separate rebooting. Since each OS receives a specific share of the resources from the physical server, each one is isolated from one another and cannot interfere.
Change is a good thing. Unfortunately, when you are making big changes to your site or application, there is always room for error. Live-state snapshots takes the idea of a "backup" and brings it forward to its next logical step. Taking a snapshot of your partition not only creates a backup of your files, but also all of the processes running in the background at that instant in time. This way, if you make an error or break something while making updates, you can revert your partition to that exact snapshot, providing a working, fail-safe rollback.
With VPS Hosting you don't share resources because you have defined memory and bandwidth allocations within your virtual environment. A VPS will give you far more bandwidth and disk space and ensure you are never compromised by someone else's website. It's also a more flexible solution if your website grows and you need to move to another server – since it's easier to move a VPS to a new physical server than to transfer the contents of a dedicated server over to a new host.
It provides you with even more options, including root access, access to Apache and PHP.ini (modification of PHP variables), and much more. You can also install an SSL certificate, and all software program types. In short, you get more freedom in terms of administering and configuring your server, without the hassle of managing any physical hardware.