Amazon's fight with the FTC contains an uncomfortable lesson for advertisers

Amazon is facing a lawsuit from the FTC over its ad auctions. Richard Baker / In Pictures via Getty Images A version of this post appears in the CMO Insider newsletter. Sign up for Business Insider's weekly marketing newsletter. CMOs are digesting an explosive lawsuit filed by the Federal Trade Commission against Amazon this week. The advice from marketing insiders on the next steps: Check your exposure and double down on independent measurement. The FTC's lawsuit accuses the retail giant of…