  Walking technicolor, having a large anomalous dimension $\gamma_m \simeq 1$
and approximate scale symmetry, predicts Technidilaton, a light composite Higgs
as a pseudo-Nambu-Goldstone boson of the approximate scale symmetry, which can
be identified with the 125 GeV boson discovered at LHC. I will describe how
such a {\it weakly coupled light composite scalar} can be dynamically realized
in the {\it strongly coupled dynamics}, and can be fit to the current data at
LHC, based on the ladder-like computation and the holographic one. I will also
present results of our lattice collaboration (LatKMI Collaboration) searching
for a walking theory and a light flavor-singlet scalar bound state in large
$N_f$ QCD.
