"Efficiency describes the extent to which time or effort is well used for the intended task or purpose. In general, efficiency is a measureable concept, quantitatively determined by the ratio of output to maximal possible input." (Bellini 2014, p. 14)
To increase impact in this area, measures should be taken – as well as in the field effectiveness - like easy handling, embedding in scientific workfklows and providing assistance for users.
Whether these measures are (really) successful in increasing the efficiency and the effectiveness, can be demonstrated by using various indicators like intensity and extent of use, as well as the reputation and the acceptance within the community. (Gnadt et al. 2016)