dugadigital.com
Debugging sGTM Preview Mode in a Google Tag Gateway World
If you have ever tried to debug server-side GTM behind a Google Tag Gateway setup, you will have felt the quiet pain of a preview window that refuses to light up. The hits are going through, the data looks fine, and yet Preview Mode sits there in silence. In a previous post we discussed GTG and sGTM working together and the topic of preview mode was mentioned in passing. This time, we’ll unpick what, how, why, and what to do about it when it goes out of true.Client side vs server side: two diffe