Measurement of Higgs boson production in association with top quarks with the ATLAS detector

The measurement of the production of the Higgs boson with a pair of top-anti-top quarks gives direct access to the top-quark coupling to the Higgs boson, and is therefore important to understand the mass generation of fermions. The measurements are performed in different Higgs boson decay channels. The challenges range from analyzing final states with very small branching ratios to understanding the backgrounds for very complex final states. This talks presents the analyses using Higgs boson decays to a pair of photons, to multi-lepton final states, including $ZZ^*\rightarrow4\ell$, and to a pair of $b$-quarks using $pp$ collision data collected at 13 TeV, as well as their combined results.