Efficiency
From ControllingWiki
A measure is efficient when there is no other measure for an output-input-ratio that can provide a better ratio. A necessary but not sufficient second condition is that, according to the rationality premise of the economic principle, the output has to be greater than the input, otherwise there can come to a small loss of resources. The task of examining/calculating efficiency belongs to accounting.
Efficiency (profitability)
• doing things right/proper execution of relevant measures (according to Drucker)
• ratio between input and output or between services and costs. It is worth noting that there is often a conflict of goals between effectiveness and efficiency.
Source
ICV-Statement „Grundmodell für Kommunikations-Controlling“
Internet
[1]www.communicationcontrolling.de
First version by
ICV work group "Kommunikations-Controlling", leader: Dr. Reimer Stobbe