Electroweak symmetry breaking after the Higgs discovery

I give a pedagogical introduction to the physics of electroweak symmetry breaking. Higgs boson production and decay at the LHC and the consistency of the Higgs measurements with triviality arguments, vacuum stability, and pre- cision electroweak measurements are discussed. Effective Lagrangian tech- niques are used to understand potential deviations from the Standard Model (SM) predictions.