Whenever an app is executed on a web server, it's loaded into the physical memory. In the event that you run a resource-demanding script, or if you just add more scripts on your websites and you get lots of visitors, you could encounter a scenario where your VPS has insufficient memory to run all the programs and freezes because of this, which means your websites shall stop functioning effectively and that the website visitors will start seeing error messages. To avoid this type of a scenario, you'll be able to take advantage of the RAM upgrade that we're offering and increase the amount of physical memory you can use without changing the entire plan. This way, you may pay only for the resources you actually need and not for additional disk space or higher Central processing unit speeds which you shall not really use, for instance. With the upgrade, you could ensure the sleek functioning of your websites, which also means a better experience for your site visitors.