sections for Higgs boson production in the diphoton decay channel using data corresponding to an integrated luminosity of [[$35.9\fbinv$]{}]{}of collisions at ${\ensuremath{\sqrt{s}}\xspace}=13$recorded by the CMS experiment in 2016. The aim of the analysis is to perform measurements of the Higgs boson production cross section in a fiducial phase space, to be compared with theoretical predictions. The methods used closely follow those developed for the [$\PH\to\Pgg\Pgg$]{}differential cross section measurements at ${\ensuremath{\sqrt{s}}\xspace}=8$ [@Khachatryan2016] and are designed to measure the Higgs boson production as a function of the final state kinematic observables with a minimal dependence on theoretical assumptions, allowing a direct comparison between the experimental results and the theoretical predictions. In contrast, the complementary approach adopted in [@CMS-PAS-HIG-16-040] aims at maximizing the observation sensitivity for the SM Higgs boson by explicitly relying on theoretical predictions and their uncertainties.

For each bin of the differential observables, the signal is extracted by fitting to a narrow signal peak on top of the steeply-falling background spectrum of the diphoton invariant mass distribution. To improve the precision of the measurements, the events are categorized using a diphoton mass resolution estimator. Both inclusive and differential cross sections are measured and unfolded within a fiducial phase space defined 