Espresso and Cafe Au Lait are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Espresso and Cafe Au Lait's differentiating factor?In following section we will take a close look at what is Espresso and Cafe Au Lait color, serving style, types and much more. First thing to know is what are the different types of Espresso and Cafe Au Lait. Well, Espresso types include Espresso Romano, Espresso Machiatto, Espresso con Panna, Café Latte, Flat White, Café Breve, Cafe Mocha, Americano while types of Cafe Au Lait are Espresso.