A deck oven is a type of oven that is commonly used in the baking industry to bake bread, pizza, and other baked goods. It is called a deck oven because it features a flat, stationary surface, or deck, where the food is placed to bake. Deck oven typically have multiple decks, allowing bakers to bake multiple items at once. The decks are made of thick, heavy material, such as stone or ceramic.