Facebook puts ad agencies under the microscope

Hi and welcome to Insider Advertising for May 3. I'm senior advertising reporter Lauren Johnson, and here's what's going on:Facebook's agency audit.The power players of IPG.The ad execs helping with the cookie crash.If this email was forwarded to you, sign up here for your daily insider's guide to advertising and media.Tips, comments, suggestions? Drop me a line at LJohnson@insider.com or on Twitter at @LaurenJohnson.
Facebook CEOP Mark Zuckerberg in New York City on Friday, Oct. 25, 2019.
AP Ph