In case you use a VPS for online and offline apps, you may come across a case where they don't function correctly due to lack of physical memory. This may happen if you try to run an app which requires additional RAM than the amount your package provides, or if you have too many apps and some of them consume all the memory, leaving no free RAM for the others. Even if you get a powerful plan, this could happen if you include more programs on the hosting server in the future, and since it is possible that you'll need simply more physical memory, but not higher CPU speeds or more disk space, our company offers a RAM upgrade which you may use without changing your entire plan. Thus, you may pay just for the resources which you really need and you shall be able to avoid errors on your sites caused by deficiency of memory and the inability of the Virtual Private Server to load the applications.