“The main area of challenges for us since the initial AMP integration is setting up our custom ad products. At Vox Media, we frequently leverage custom, proprietary ad formats that are critical to most direct sold ad contracts. With the significant traffic on AMP, it was critical for us to be able to do two things, 1) serve those custom formats in one of the available ad slots and 2) be able to serve multiple ad request sizes to one ad slot. We were able to accomplish both, but it took significant engineering resources to achieve that. I want to be clear that AMP support was very helpful throughout that process.”