Observations of massive stars with the ILMT: what can we learn from (variability) studies using the ILMT?

Although massive stars constitute only a small fraction of the galactic stellar population, their influence on the galactic environment as a whole is huge. Among other features, they are the main providers of UV radiation in the interstellar medium, their strong stellar winds provide a wealth of mechanical energy in their surroundings, they enrich the medium in chemical elements, and at various evolutionary stages they are at the origin of most of galactic cosmic-rays. Massive stars display a complex, and still poorly understood behaviour, in particular regarding their time variability. In this talk, I will briefly overview some aspects of massive star studies that may benefit of photometric surveys. The census of topics presented in this contribution is intended to open questions about the potential outcome of the International Liquid Mirror Telescope for massive star studies.