Higgs searches at ATLAS

On July 2012, the ATLAS and CMS collaboration announced together the observation of a new boson in the Higgs searches, with a mass around 126 GeV. Since then, the Large Hadron Collider has been running steadly, providing proton-proton collisions at $\sqrt{s}=8$~TeV; both experiments have now more than doubled the amount of data available. I will review the latest results of the ATLAS collaboration on Higgs searches, both in the Satandard-Model framework and beyond. I will focus on the updated results with respect to summer 2012, with particular attention to the changes in analysis and calibration techniques; the first results on 2012 data of Higgs searches to b-quarks and tau leptons final states will be presented as well.