Volatile memory is a type of computer memory that requires power to maintain the stored information. When the power is turned off, all data in volatile memory is lost. Common examples of volatile memory include RAM (Random Access Memory), which is used by computers and devices to store data temporarily while they are in use. This type of memory is essential for the fast performance of applications and processes, as it allows quick read and write access. However, because it is temporary, volatile memory is often paired with non-volatile memory, such as hard drives or solid-state drives, which retain data even when powered off.