A virtual server and a dedicated server differ by the number of users that possess resources on a physical server. With a virtual private server, some of the resources are isolated for individual users, but there are multiple users on the same physical server. With a dedicated server, a single user has access to all of the resources of a physical server.
cPanel will do almost everything for you (until things go wrong) but you still need to know how to use bash and yum, how to secure your VPS, and how to troubleshoot your own connectivity issues at a minimum if you decide to roll with an unmanaged service... also, whenever WHM/cPanel sends you an e-mail alert you should read it and follow any links to WHM/cPanel documentation - our support team had far too many cPanel tickets in which the subscriber forwarded along the alert after ignoring the link which described how to solve the problem.
When purchasing a VPS hosting package the web hosting provider will manage all the hardware and while you will have administrative access through a control panel to do whatever you want with your server, they will still make sure that it is available, has up-to-date system software, it is secured and has the available hardware resources to run according to the VPS package specification.
However, with InMotion you get enterprise-level servers and a 90-day money-back guarantee: so you have 3 full months to see if this company is right for you! Is it? We believe so - it's one of the highest ranked VPS services we tested. Unlocked CPU cores allow for faster data processing, and with plenty of resources, you can host not one, but several big projects under one account. If you're not sure whether the VPS can handle what you throw at it, give InMotion a try. It most definitely can.
Amazon EC2 is a web service that provides secure, resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. You can use Amazon EC2 for a variety of applications, including websites and web applications, development and test environments, and even back-up and recovery scenarios. Amazon EC2 offers a wide selection of instance types with varying combinations of CPU, memory, storage, and networking capacity that you can use to meet the unique needs of your applications.
A VPS runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS. For many purposes they are functionally equivalent to a dedicated physical server, and being software-defined, are able to be much more easily created and configured. They are priced much lower than an equivalent physical server. However, as they share the underlying physical hardware with other VPSes, performance may be lower, depending on the workload of any other executing virtual machines.