Emil Emanuel Ankjær Nordahl discovered that Mixed campaign type experiments are now available in an early beta.
You can test different campaign types against each other (for example Search vs. Performance Max, Demand Gen vs. video, or feed-only PMax vs. Standard Shopping).
The main limitation is that both campaigns must already exist, so you can’t yet test small setting changes within a single campaign.
For now, the workaround is to duplicate a campaign and experiment with different structures or bidding. Despite the limits, this is one of the most promising experiment updates so far.
