VPS, on the other hand, is an isolated playground specifically for you. You will be able to install and use any professional software you need. It also provides more opportunities for caching the content. Imagine that you implement caching tools to provide your users with better experience and reduce the loading time of your website. Caching means that the part of requests to your website will be processed using RAM instead of a hard drive. Eventually, RAM will be filled with these requests. Since VPS deals offer more RAM then shared packages, you will get better performance using caching.
If you are just starting your website and don’t receive very much traffic, then shared hosting is the ideal solution. However, if your website’s audience is consistently growing, you’ll want to consider upgrading. You don’t want to run the risk of your website running slowly or, even worse, your server crashing because it can’t handle the traffic. If you anticipate an increase in visitors, do yourself a favor and switch to VPS.
Once you register your website's domain name, it's time to start picking the specs for your server. Web hosts typically offer multiple VPS plans that have varying amounts of email capability, RAM, storage, CPU power, domain hosting, and monthly data transfers. The plans typically include website builders that let you quickly create a face for your site without much—or even any—coding required. A solid web host should offer at least 4GB of RAM, 100GB of storage, and an ample volume of monthly data transfers. If you expect a significant amount of website growth, then you should look for a web host that has as many unlimited offerings as possible. For example, Hostwinds—the PCMag Editors' Choice for VPS hosting—offers unlimited email, domains, and monthly data transfers. Note, however, that as with all unlimited service offerings, you really need to read the fine print to make sure that what you mean by unlimited and what the hosting service means by it.

Other powerful features included in InterServer VPS hosting plans are high performance SSD storage, easy to use VPS control panel, instant provisioning, and 99.9% uptime guarantee. They also provide 100s of free scripts to make it easy to install the most popular applications on your VPS server.

For security reasons, the first thing you should do after starting the server for the first time is login at the console using the administrator username and password (as configured above or given to you by the hosting company) and install the latest operating system patches. On Ubuntu and other Debian-based systems you can do this with the following commands:

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ScalaHosting allows you to have your own fully managed cloud VPS with a control panel and daily backups.
• Daily & Weekly Backup of VPS Data
Some systems administrators will also install Nginx (or Lightspeed / Lighttpd on BSD) as alternative server frameworks to Apache using VPS plans. For example, Nginx, Varnish Cache, & WordPress can be installed on VPS hosting plans to support up to 2x the simultaneous user traffic and pageload speeds for high traffic websites when compared to the most common Apache servers. Hadoop, Tomcat, VPN, & email servers can also be run on VPS plans. Cloud VPS platforms support web and mobile applications at scale by replicating under elastic cloud architecture and can speed up DevOps deployments using snapshots like Bitnami.

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There are a few downsides to shared hosting, though, mostly because you’re sharing. For instance, if someone else on your shared server has a huge spike in traffic, that could affect your website’s performance. However, if you’re just getting your website off the ground and don’t have huge traffic volume, shared hosting is a great way to get online!
Most SSD storage drives operate in RAID arrays in data centers including multiple copies of website files for backup purposes in case of hardware failure. SSD storage can also be used as Virtual RAM (VRAM) with much higher performance standards than HDD for caching PHP & MySQL database functions in active memory. Effective use of SSD & VRAM in web servers can save significantly money in corporate IT and has been developed by Twitter in their data centers. Generally, it would not be recommended to sign up for VPS plans implementing HDD storage over SSD options in 2017 for hosting.
The most obvious and popular reason for a VPS is to run a single website, or multiple websites. However, you can use them for pretty much anything that requires access to the internet – such as a web application like Nextcloud to run your own Dropbox alternative – or to create your own virtual private network to better secure the internet connection of your PCs and mobile devices.