2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117681I discuss the saturation regime of QCD: the weak-coupling regime that describes large parton densities inside hadrons and the resulting high-energy behavior of scattering amplitudes. I briefly review past successes in the context of deep inelastic scattering at HERA and forward particle production at RHIC, and I present some recent progresses that significantly improved our understanding of high-energy scattering in QCD.4 pages, 4 figures, Proceedings of the XXXIIIrd International Conference on High Energy Physics (ICHEP06), Moscow, Russia, July 26-August 2 2006High Energy Physics - Phenomenologytext