In January 2020, when Google Tag Manager’s server-side tagging was first introduced to the general public at SuperWeek, I wrote a flurry of tweets, sharing my vision of a server-side tagging future. In one of the tweets, I discussed how you could do these: Hit validation and fixing before the hit is sent to the endpoint PII and privacy controls for the requests before dispatch Fast forward to today, over three years later, and we are finally treated to a feature that grants us scalable controls to properly interrupt data flows within server-side GTM.
Writing this article is dangerous. Data Layer is two marketers short of becoming a buzz word. This occasion will be heralded by articles such as “Data Layer Is Dead”, “This Developer Implemented A Data Layer And You’ll Never Guess What Happened Next”, and other examples of the kind of content generation whose propagation should be prevented by military force. This is not one of those articles, I hope, but rather an honest look at what Data Layer is from a number of perspectives.