About a third of retail marketers are shifting ad spend from traditional digital media giants like Facebook and Google to Amazon, according to a new study, writes John Koetsier.

Here is the link: https://www.forbes.com/sites/johnkoetsier/2019/02/06/1-of-3-marketers-shifting-ad-spend-from-facebook-and-google-to-amazon-study-says/#1dce569248e7