There are two types of wood fired ovens in regards to the shape of the oven. These are barrel vault and igloo dome ovens. Igloo dome wood fired ovens are normally found at home for personal use while barrel vault wood fired ovens are mainly found in large bakeries or eateries.
Barrel vault wood fired ovens are rectangular in shape and have a larger space for cooking and the source of heat energy is usually wood. They allow you to cook large quantities of pizzas or bread at a time hence you can never run out of stock if you sell these pizzas. Therefore, if you are planning to build a commercial oven, you should settle for a barrel vault oven.