Molecular docking is a computational technique used to predict the optimal binding geometry and strength of interaction between a small molecule (ligand) and a macromolecular target (receptor), typically a protein or nucleic acid. This method investigates the possible binding modes by exploring the conformational space of the ligand and the receptor's binding site, evaluating the resulting intermolecular forces and scoring the likelihood of stable complex formation. Its significance is substantial in the fields of rational drug design, lead discovery and optimization, and the study of molecular recognition mechanisms in biological systems.