@na-moth Interessante questo approfondimento relativamente alla QI.
E altrettanto interessante la risposta della mitica Ginny:
Hi Scott, I want to clarify a few things here.
In Search, if the query is identical to a keyword in your account (regardless of match type – exact, phrase or broad), the Search campaign will be prioritized over Performance Max. More on keyword selection here: https://support.google.com/google-ads/answer/2756257
It’s correct that the Search keyword has to be eligible to show, but as long as it’s eligible, impression share has zero impact on its prioritization over Performance Max. In other words, as long as the Search keyword is identical to the query and eligible to show, it will trump Performance Max regardless of bid/Ad Rank/ impression share.
If the query is not identical to a keyword in the account, that’s when Ad Rank comes into play. The campaign/ad with the the highest Ad Rank, which includes creative relevance and performance, will be selected.
Hope that helps! Let me know if you have any questions.