Once you turn off the laptop or PC, this memory is lost. It holds data of the applications you’re actively working on. When you open an application or switch between applications, memory is being used in between these tasks. Only the data required immediately are stored in the RAM.
It is a sort of the computer’s short period memory. Think of RAM as a place where data is temporarily stored.
RAM or Random Access Memory is where super-fast computing takes place. Why Should You Know Your RAM’s Storage Size.