  The vector dominance of the electromagnetic form factors both for mesons and
baryons arises naturally in holographic QCD, where both the number of colors
and the 't Hooft coupling are taken to be very large, offering a bona-fide
derivation of the notion of vector dominance. The crucial ingredient for this
is the infinite tower of vector mesons in the approximations made which share
features that are characteristic of the quenched approximation in lattice QCD.
We approximate the infinite sum by contributions from the lowest four vector
mesons of the tower which turn out to saturate the charge and magnetic moment
sum rules within a few percent and compute them totally free of unknown
parameters for momentum transfers Q^2 less than 1GeV^2. We identify certain
observables that can be reliably computed within the approximations and others
that are not, and discuss how the improvement of the latter can enable one to
bring holographic QCD closer to QCD proper.
