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High-mass X-ray binaries are fundamental in the study of stellar evolution,nucleosynthesis, structure and evolution of galaxies and accretion processes.Hard X-rays observations by INTEGRAL and Swift have broad- ened significantlyour understanding in particular for the super-giant systems in the Milky Way,which number has increased by almost a factor of three. INTEGRAL played acrucial role in the discovery, study and understanding of heavily obscuredsystems and of fast X-ray transients. Most super-giant systems can now beclassified in three categories: classical/obscured, eccentric and fasttransient. The classical systems feature low eccentricity and variabilityfactor of about 1000, mostly driven by hydrodynamic phenomena occurring onscales larger than the accretion radius. Among them, systems with short orbitalperiods and close to Roche-Lobe overflow or with slow winds, appear highlyobscured. In eccentric systems, the variability amplitude can reach even higherfactors, because of the contrast of the wind density along the orbit. Foursuper-giant systems, featuring fast outbursts, very short orbital periods andanomalously low accretion rates, are not yet understood. Simulations of theaccretion processes on relatively large scales have pro- gressed and reproduceparts of the observations. The combined effects of wind clumps, magneticfields, neutron star rotation and eccentricity ought to be included in futuremodelling work. Observations with INTEGRAL in combination with otherobservatories were also important for detecting cyclotron resonant scatteringfeatures in spectra of X-ray pulsars, probing their variations and the geometryof the accretion column and emission regions. Finally, the uniquecharacteristics of INTEGRAL and its long life time played a fundamental rolefor building a complete catalogue of HXMBs, to study the different populationsof these systems ...

High-Mass X-ray Binaries in the Milky Way: A closer look with INTEGRAL