The golden rule for unmanaged VPS hosting is this: If you have a problem with your unmanaged VPS Account, it is your problem. If the problem is software related, resource related, performance related, need troubleshooting or configuration of software, or need general help understanding Unix or server applications, you are on your own and should not expect help from the web host.
A couple of years ago I remembered going to a demo and watching Hyper-V crash, but since then a lot has changed. Hyper-V can now do many of the same things most enterprise virtualization software boast about. Live migration, HA, templates, and importing VMs from VMware and EC2 using SystemCenter VMM. The only real hang up is the lack of popularity with the Linux community
If you’re outgrowing your shared web hosting or simply want more control, a managed or fully managed Virtual Private Server (VPS) is the next logical choice for your hosting needs. It gives you more freedom with root access to Apache and PHP, plus you can install an SSL certificate, as well as any type of software – all without the responsibility of a dedicated server.

Deploy a full range of open-source and community-driven software solutions on Azure. Choose from a full range of Linux distributions like Red Hat, Ubuntu, SUSE, and community-driven solutions like Chef, Puppet, and Docker. Deploy virtual machines for other products like Oracle Database and Oracle WebLogic Server. Azure is open with lots of options.
I was in a similar situation about a year ago, had a managed VPS for some years before i needed a better server and had to switch to an un-managed VPS. Although i had another un-managed VPS without a control panel previously, this time round i chose an un-managed box with cPanel already installed. This was quite handy as i didn't have to deal with installing and licencing the control panel. As have always used cPanel, setting up sites, databases, DNS and all the other configurations was straight forward and fast.
Managed VPS hosting obviously varies from one hosting provider to another, but if you do not possess a vast amount of technical knowledge and ability, this “hands off” approach is definitely your most feasible option.  If you have little to no experience running or maintaining a server, managed cloud VPS hosting can be very beneficial to you because the web host typically takes care of the software and system updates that you request, and in some cases, even does them automatically for you as they are needed.

This is a low cost option for the hosting company and they will usually offer some kind of data protection using a RAID system where data is copied across multiple disks. This is an entry level solution but one issue is that the server itself represents a single point of failure. It could be that the power supply fails which brings the server down for example.
Amazon Virtual Private Cloud (Amazon VPC) lets you provision a logically isolated section of the AWS Cloud where you can launch AWS resources in a virtual network that you define. You have complete control over your virtual networking environment, including selection of your own IP address range, creation of subnets, and configuration of route tables and network gateways. You can use both IPv4 and IPv6 in your VPC for secure and easy access to resources and applications.