  We identify and characterise the conformal window in gauge theories relevant
for beyond the standard model building, e.g. Technicolour, using the criteria
of metric confinement and causal analytic couplings, which are known to be
consistent with the phase diagram of supersymmetric QCD from Seiberg duality.
Using these criteria we find perturbation theory to be consistent throughout
the predicted conformal window for several of these gauge theories and we
discuss recent lattice results in the light of our findings.
