What is "Keep the Lights On" technology?

"Keep the Lights on Technology" is the IT that is required for any organization to function. Email, Internet, Wifi, Phones are examples of this category. We sometimes call this "Break-Fix" technology. "KTLOT" should be like a utility, it should just work.

When you turn a knob, water comes out. When you flip a switch, the light turns on. KTLOT should work the same way. If it doesn't just "work" something is wrong. This technology should just melt into the background.