Pay per play
Pay per play also known as Cash per play (CPP), is an online advertising method that plays an audio advertisement
Advertising is a form of communication used to persuade an audience to take some action with respect to products, ideas, or services. Most commonly, the desired result is to drive consumer behavior with respect to a commercial offering, although political and ideological advertising is also common...

 on websites. The term "pay per play" comes from advertisers paying for each audio ad played. Also, the web page playing the audio ad is normally paid for each ad they serve. Ads are typically automatically played when a visitor loads a web page. Most commonly initiated via JavaScript
JavaScript is a prototype-based scripting language that is dynamic, weakly typed and has first-class functions. It is a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles....

, audio ads normally cannot be stopped once they start. Audio ads vary in length, and a website visitor will usually hear only one advertisement per visit to any specific web page.

In radio advertising, the term "pay per play" can also refer to a relationship between advertisers and audio ad producers.
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