  As a top-down holographic approach, the D4/D8 model is expected to be the
holographic version of QCD since it almost includes all the elementary features
of QCD based on string theory. In this manuscript, we review the fundamental
properties of the D4/D8 model with respect to the D4-brane background,
embedding of flavor branes and holographic quark, gluon, meson, baryon and
glueball with various symmetries, then we also take a look at some interesting
applications and developments based on this model.
