What are the advantages of aging red wine in a barrel?

When wine ages in a barrel, it is exposed to percentages of oxygen which interacts with the red wine, softening the tannins and enhancing the taste.  https://ivfsurvivalguide.com/?p=2760 The barrel also imparts other flavors to the wine, such as toast, spice, or vanilla, depending on the kind of wood used.  https://signsong.org.uk/?p=753 In addition, barrel aging enables the red wine to establish a long finish and an intricate bouquet. my review here