A wholesale bakery makes and sells cakes, breads, pastry and pies.
It sells it to the food service industry, like restaurants, hotels, supermarkets, hospitals and schools, to name a few.
They provide breads, cakes, pies, cookies and other baked goods. Chances are when you buy birthday cakes from supermarket bakeries, the cake, while frosted on site by a cake decorator, was made elsewhere.
Even the layers of wedding cakes that you buy from a bakery may not be made on site. The main output though, of the wholesalers is breads and rolls.
Some of these companies will sell to individuals but many will not because the average person doesn’t buy in the bulk that supermarkets do.
However if you are having a huge party or doing all the work for your daughter’s wedding, it may be worth a try.
A wholesale bakery may even be able to supply you with the basic layers for the cake.