Google Tag Manager (or for the purpose of speed GTM) is a hugely popular and powerful platform. However, it’s incredibly easy to get wrong. And if you’re using Google Analytics (which you most likely are) any mistakes you make are going to be forever visible on your account/view. This often can lead to problems comparing data, for example if you want to look at year on year (YOY) metrics, an issue with GTM tracking could easily lead to distorted and inaccurate figures.
What changes in digital marketing have had the biggest impact in 2019? Where is digital marketing heading in 2020?