2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177562I review recent progress on understanding QCD dynamics involved in exclusive $B$ meson decays. Different frameworks, including light-cone sum rules, QCD factorization, perturbative QCD, soft-collinear effective theory, light-front QCD, are discussed. Results from lattice QCD are quoted for comparison. I point out the important issues in the above QCD methods, which require further investigation.80 pagesHigh Energy Physics - Phenomenologytext