Always On

Reviewed by Tara StruykCheckmark | Last updated: May 29, 2020

What does Always On mean?

Always on in a technology context refers to systems that are continuously available, plugged in, or connected to power sources and networks. Always on may also refer to systems that are continually operational - that do not take breaks, but continue to hum along through all hours of the day and night. It most often refers to an internet connection that is always accessible.


Techopedia explains Always On

As computing became more sophisticated, always-on systems have started to replace older on-demand systems that functioned on different types of resources. For example, some of the best examples of modern always-on systems are cable modems and DSL connections. That is a contrast to yesterday's dial-up connections that were only "on" when they were connected through a particular method using the public switched telephone network.


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