What are the advantages of aging wine in a barrel?

When  https://howtomakewinefromgrapes.com/different-grapes-for-making-wine/  in a barrel, it is exposed to small quantities of oxygen which interacts with the red wine, softening the tannins and boosting the taste. The barrel likewise imparts other flavors to the red wine, such as spice, toast, or vanilla, depending upon the kind of wood used. In  https://howtomakewinefromgrapes.com/avoid-these-mistakes-when-making-wine/ , barrel aging enables the red wine to develop a long surface and a complex bouquet.