exposing API gives customers flexibility to build their own tailored interface to your service rather than being stuck with your sometimes shitty interface. I

exposing API gives customers flexibility to build their own tailored interface to your service rather than being stuck with your sometimes shitty interface. I like the analogy of a restaurant. API is sort of like takeout order, here is your food packed in a bag now do whatever with it. Not having a takeout option means customers are stuck with whatever service you provide in the restaurant.