SEZIONE DI ROMA III I will discuss the effective field theory approach to physics beyond the Standard Model. I will review the so-called SM EFT where the Standard Model Lagrangian is extended by a complete set of dimension-6 operators. This framework approximates a large class of models beyond the Standard Model where the new particles are much heavier than the weak scale. The current constraints on the dimension-6 operators from low-energy precision experiments and weak-scale electroweak precision observables will be summarized. Finally, I will discuss what can be learned about the SM EFT and new physics from the Higgs boson measurements at the LHC.