How to improve power supply MTBF and reliability

No one wants their production line to stop working prematurely due to a failure

Source: TDK-Lambda
Power supply reliability is important - no one wants their production line, measurement instrument, communications system or electronic product to stop working prematurely due to a failure. This white paper is intended for electronics engineers and designers working with power systems for the industrial environment, and asks how is reliability defined, what methods can designers use to improve reliability and how do you ensure that a selected product will meet expectations?