What does the SMPS abbreviation mean?

Switched Mode Power Supply (SMPS):
It is an electronic device that uses a switching regulator to transfer effective power supply when required.
It transfers power from a direct current or alternating current source, such as mains power, to direct current loads.
It is often used in devices like computers to change the voltage to an appropriate range.
They are more efficient and save space more than typical linear power supplies.