When you add sliced or diced tomatoes directly to a pizza instead of using tomato sauce or paste, it is commonly referred to as a "Margherita-style" pizza. Margherita pizza is a traditional Italian pizza named after Queen Margherita of Italy. It typically consists of a thin crust topped with sliced fresh tomatoes, fresh mozzarella cheese, and fresh basil leaves. The tomatoes provide a burst of freshness and flavor to the pizza, and they can be a delicious alternative to using traditional tomato sauce or paste.