On a traditional wedding cake the frosting prevents the cake from drying. A "naked cake" has no frosting, it only have decorations; it is considered a non-traditional modern cake. Marie at ModBaskets™ makes a Semi-naked Wedding Cake that is glazed on the outside to prevent drying, frosting or fillings between the tiers, and decorations and flowers and/or fruit on the outside. There are ifinite variations to a Semi-naked Wedding Cake.
 
The photo is at a Bridal Expo showing a small 2-tier demo cake and cake cups with cake samples for a Cake Tasting demo. The frosting and filling is American Buttercream frosting. The cake flavor was a ModBaskets™ specialty: "Sunshine Cake"