Amazon's authenticated graph: new pitch, mostly old plumbing: Amazon Upfront 2026 pitched a 90% authenticated graph and Dynamic TV Creative, but most of the stack was already shipped at November 2025's unBoxed conference. https://ppc.land/amazons-authenticated-graph-new-pitch-mostly-old-plumbing/ #Amazon #AuthenticatedGraph #DynamicTV #DigitalMarketing #Advertising