What is an API? (Application Programming Interface)

APIs do lots of important tasks behind the scenes in everything from graphics rendering to booking flights. But what exactly are they, and how do they work? Thanks to Braintree for supporting our channel. To learn more, and for your first $50,000 in transactions fee-free, go to http://www.braintreepayments.com/techquickie. Follow: http://twitter.com/linustech Join the community: http://linustechtips.com source