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.
It comes down to basic reasons: If your business is growing and receiving more traffic, it is time to move to a more controlled setting like VPS.
There will be a point in your life where the needs of your website will be too much for a shared hosting server to manage and VPS hosting will eventually become a necessity for you. Meanwhile, you need to take great care to ensure that the VPS which you select is appropriate for your needs and requirements. Hence, you need to start by making a list of your requirements and then comparing various servers before coming to a conclusion on the best possible server for you.
On the other hand, there are still some applications which are only supported on Windows and not on Linux. Hence, if you use technologies such as ASP.NET and ASP, then you may be better off with Windows rather than Linux.
Most VPS hosts only offer servers running Linux-based operating systems; you'll need to dig a bit to find Windows-based VPS hosting. This is important to note if you're planning on running software that requires a Microsoft-compatible environment. That said, Linux-based VPS hosting will save you a few bucks; Linux servers usually cost $10 to $20 less than Windows servers.
A virtual private server (VPS) is a virtual machine (something like a computer divided into many smaller machines using special software). They are often used by Internet hosting providers. Multiple VPS's run on the same machine, but they are separated as they will only share hardware resources without interfering on software level. A VPS is dedicated to the customer's needs, has the privacy of a separate physical computer, and can run server software. There are many platforms that can run a VPS. Some of them are VMWare and Xen.
With a standard shared hosting plan, you’re at the whims of other webmasters who share the same server. Some companies put hundreds of websites on the same physical server. If one of those sites experiences significant growth or gets a sudden influx of traffic, your site’s performance will suffer. There are only so many resources to go around. When one site needs more resources, it’ll hog them and cause issues with the other sites.
With a dedicated server, you can install any operating system. Cloud VPS offers a limited selection (at Liquid Web, it’s CentOS 6, CentOS 7, Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Debian 8, Windows Server 2012 R2 Standard, and Windows Server 2016 Standard Edition.) Otherwise, both options give you full root access with control over the OS and all the software in the environment.
The "slashdot" effect is the main problem which will lead to VPS hosted website crashes more than any other. For example, if a VPS plan has an allocation of 2 GB of RAM and 2 CPU cores with a maximum support for around 200 simultaneous users of a complex Drupal or WordPress site, a popular social media link may temporarily increase traffic to a website 10x or 100x. In these cases, the VPS will crash... unless the overflow can be managed by burstable RAM or elastic cloud scalability. In elastic frameworks, the network monitoring software simply launches a new VPS instance with a cloned & synchronized version of the website files that can manage the additional user demand. When the traffic spikes decrease, elastic server networks can automatically scale down VPS instances to conserve resource utilization in production.
Shared hosting is cheap and allows you to install any gallery platform you wish if a hosting plan meets its requirements. But be careful and study your hosting provider’s Acceptable Use Policy thoroughly. The truth is, that even if they claim unlimited storage with their plans, they don’t want you to use much of it. On the contrary, they secretly hope that you will use less and they can host many other clients on the same server. For that reason, hosting providers usually put limitations on their policies (e.g. “no more than 10 GB for images,” etc.). So don’t be convinced that you have unlimited storage without first checking your shared hosting provider's policies or you will find your account suspended someday.
A virtual private server refers to a virtual machine which is generally sold as a service by service providers which provide Internet hosting. A VPS tends to run its own copy of operating systems where the customers are granted super user-level access to the server, basically allowing them to install nearly any software that can run on the relevant operating system.
With Cloud VPS, if a parent server has 64 processing cores, it can host up to 64 instances. Each instance is allocated its own bandwidth and storage, so your performance won’t be affected by other companies on the server in the way it might with shared hosting. You also get more bandwidth and storage since the hosting company is limited on the number of instances they can create on each parent server.