An attractive explanation of the flavor puzzle of the Standard Model
is the multi-scale origin of the flavor hierarchies, where the SM
Yukawa couplings of the different fields are generated at different
scales. An interesting way to implement this idea is by extending the
gauge group of the SM to a non-universal larger group. In this setup,
an approximate global U(2) flavor symmetry minimally broken can
emerge, that allows to circumvent the stringent flavor bounds for New
Physics, opening the possibility of interesting UV completions of the
SM at the TeV scale. In this talk I will explore this approach to BSM
physics and discuss different realizations and their phenomenological
implications.