We’re always on the lookout for writers who explain succintly any aspect of the five dynamics. Dan Woods over on Forbes has written a great article on explaining an API to your CEO.
Here’s a diagram Dan uses to explain the API value chain and it makes the value proposition beautifully simple:
Dan and his colleagues have written a book on the business value of APIs. Rather than summarise it I advise you to start with the Forbes article, where there is a link to the book.