  By virtue of their young age and intermediate mass, Herbig AeBe stars
represent a cornerstone for our understanding of the mass-dependency of both
the stellar and planetary formation processes. In this contribution, I review
the current state-of-the-art multiplicity surveys of Herbig AeBe stars to
assess both the overall frequency of companions and the distribution of key
orbital parameters (separation, mass ratio and eccentricity). In a second part,
I focus on the interplay between the multiplicity of Herbig AeBe stars and the
presence and properties of their protoplanetary disks. Overall, it appears that
both star and planet formation in the context of intermediate-mass stars
proceeds following similar mechanisms as lower-mass stars.
