2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/6379(Sub-)mm interferometry is the most favorable technique to investigate the earliest stages of massive star formation. I will outline general applications in that field and discuss results of different sub-topics (hot core chemistry and massive molecular outflows). Furthermore, recent data obtained with the Submillimeter Array will be shown to present the unique capabilities of this new instrument. Finally, I will give a short outlook on the main physical topics of massive star formation to be tackled with (sub-)mm interferometry within the next decade.8 pages, 4 figures, Proceedings to the IAU221 Star Formation at high angular resolutionAstrophysicstext