2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81798We present the main features of the explicitly covariant Light-Front Dynamics formalism and a summary of our recent works on this topic. They concern the bound states of two scalar particles in the Wick-Cutkosky model and of two fermions interacting via the usual OBEP ladder kernels.Invited contribution to the XIVth International School on Nuclear Physics, Varna, Bulgaria, Sept 25-30. 20 pages, 23 figuresNuclear Theorytext