  Now that a Higgs boson has been discovered at the LHC, measuring its
couplings to other particles is the next important step. In order to probe the
electroweak symmetry breaking mechanism at its core it is crucial to
reconstruct the scalar potential and hence measure the triple Higgs coupling at
the LHC. We present a review of the main Standard Model Higgs boson pair
production mechanisms in which the triple Higgs coupling plays a role and
present the latest phenomenological analyses in view of a high luminosity LHC.
One example of an analysis in the Two-Higgs-Doublet model will also be given as
an illustration of an extended Higgs sector.
