What's the secret to Coca-Cola's success? 

The answer to that question is what a CNBC film crew set out to discover.

What they found is that a long history of strategic marketing has been a critical factor. The red and white logo has appeared on pens, calendars, pocket mirrors and more. But broad name recognition is just part of the story — it's about the emotional connection Coca-Cola has with its customers.

Watch an excerpt from the film below, or go to CNBC to see the entire film: Coca-Cola: The Real Story Behind the Real Thing