olemus
Wiktionary:
verb
1. (intransitive) to mediate, to be an intermediate
2. (transitive) to arrange, in the manner of a broker

näiteid
interest intermediation -- huvide esindamine
intermediate buyer -- vahendaja; vaheltkaupleja; maakler
intermediate commercial transactions -- vahendustegevus
intermediate party -- vahendaja, vahetalitaja
intermediate sale -- vahendusmüük

ülevaateid
https://en.wikipedia.org/wiki/Intermediation

https://warwick.ac.uk/fac/sci/dcs/research/em/publications/phd/smaad/files/appendix2-1.pdf