What is an “Offering Manager”?

And for that matter what is an “Offering?” Or a “Product” or a “Feature” and how do you know the difference between them all?

What is an Offering Manager at IBM? A Product Manager? What is an Offering? How can you tell the difference between a Product and a Feature? Why can’t you just give me a simple definition? When the founders and CEOs of Apple and DropBox, Steve Jobs and Drew Houston can’t fully agree on the difference – maybe we should recognize we’re all doomed to failure! Fun! Lets keep trying!