Google Ads Ad Copy Experiments

[@koejoza]

thank you so much for this! one quick question, and apologies if i missed it mentioned here. if i have 4 different ad groups for different products under one campaign, should i test ad variations in all of these at once in one experiment, or create a different experiment for each ad group (resulting in 4 experiments for the same campaign, but changes made one step at a time by ad group)? hope this makes sense. thank you again!