  In the holographic model of QCD, baryons are chiral solitons sourced by D4
flavor instantons in bulk of size 1/\sqrt{\lambda} with \lambda=g^2*N_c. Using
the ADHM construction we explicit the exact two-instanton solution in bulk. We
use it to construct the core NN potential to order N_c/\lambda. The core
sources meson fields to order \sqrt{N_c/\lambda} which are shown to contribute
to the NN interaction to order N_c/\lambda. In holographic QCD, the NN
interaction splits into a small core and a large cloud contribution in line
with meson exchange models. The core part of the interaction is repulsive in
the central, spin and tensor channels for instantons in the regular gauge. The
cloud part of the interaction is dominated by omega exchange in the central
channel, by pion exchange in the tensor channel and by axial-vector exchange in
the spin and tensor channels. Vector meson exchanges are subdominant in all
channels.
