Here we have a video that explains very well, although in a somewhat more advanced way than in the previous video (previous video =What is Web 2.0)?, what does the term “mashup” mean and what are APIs (application programming interfaces).
The only obstacle to overcome in order to understand this video properly is ZDNet's David Berlind's English... which isn't that complicated, but the problem is that he speaks it quickly, so you have to concentrate and pay close attention.
The video is from 3 years ago but the examples are still valid and illustrate the concept well.
Enjoy it.
By the way, if you want to know why companies open source code, create APIs and seek third parties to connect to their services, you will be interested in this article. What is a Metcalfe Network?
