The detection of gravitational waves from merging black hole (BH)
binaries by advanced LIGO/Virgo has generated renewed interest in
understanding the formation mechanisms of merging compact binaries,
from the evolution of massive stellar binaries and triples in the
galactic fields, dynamical interactions in dense star clusters to
binary mergers in AGN disks. I will discuss different aspects of the
dynamical formation channel, focusing on the origin of BH binaries and
their mergers in AGN disks.