  We identify a property of renormalizable SU(N)/U(1) gauge theories, the
intrinsic Conformality ($iCF$), which underlies the scale invariance of
physical observables and leads to a remarkably efficient method to solve the
conventional renormalization scale ambiguity at every order in pQCD: the
PMC$_\infty$. This new method reflects the underlying conformal properties
displayed by pQCD at NNLO, eliminates the scheme dependence of pQCD predictions
and is consistent with the general properties of the PMC (Principle of Maximum
Conformality). We introduce a new method to identify conformal and
$\beta$-terms which can be applied either to numerical or to theoretical
calculations. We illustrate the PMC$_\infty$ for the thrust and C-parameter
distributions in $e^+ e^-$ annihilation and then we show how to apply this new
method to general observables in QCD. We point out how the implementation of
the PMC$_\infty$ can significantly improve the precision of pQCD predictions;
its implementation in multi-loop analysis also simplifies the calculation of
higher orders corrections in a general renormalizable gauge theory.
