Not to give away the ending, but yes! Using interfaces in your development will make you a cooler Business Central Developer and a better human being. Interfaces let you put a layer of abstraction between Calling Code (Hey! I need you to do something for me!) and Called Code (I will do something for you!) such that the two sides do not have to be concerned with each other. We will do a deep dive into the theory and practical uses of interfaces with emphasis on the practical since theory isn't nearly as cool as getting things done. Come along on a 45 minute ride to more efficient and more modular code.