The coupling properties of the Higgs boson are studied in the diphoton and $ZZ$ to four-lepton decay channels using $36.1~fb^{-1}$ of $pp$ collision data from the LHC at a centre-of-mass energy of 13 TeV collected by the ATLAS detector. Measurements of simplified template cross sections, designed to measure the different Higgs boson production processes in specific regions of phase space, are reported for diphoton and four-leptons decay channels. Cross sections for different Higgs boson production modes are interpreted in terms of coupling modifiers. In the $ZZ$ decay channel, the tensor structure of the Higgs boson couplings is studied using an effective Lagrangian approach for the description of interactions beyond the Standard Model.