  We apply the effective field theoretic (EFT) approach to resum the large
perturbative logarithms arising when partonic hard scattering cross-sections
are taken to the threshold limit. We consider deep inelastic scattering,
Drell-Yan lepton pair production and the standard model Higgs production
through gluon-gluon fusion via heavy-top loop. We demonstrate the equivalence
of the EFT approach with the more conventional, factorization-based methods to
all logarithmic accuracies and to all orders in perturbation theory. Specific
EFT results are shown for the resummation up to next-to-next-to-next leading
logarithmic accuracy for the above mentioned processes. We emphasize the
relative simplicity by which we derive most of the results and more importantly
their clear physical origin. We find a new relation between the functions
$f_{(q,g)}$ in the quark and gluon form factors and the matching coefficients
in Drell-Yan and Higgs production, which may explain their universality
believed to hold to all orders in perturbation theory.
