Here is what I recently found on SEJ, 4 Important Things You Need to Know About Automated PPC Bidding & sharing the same with you:
1. You Can Lose a Huge Impression Share (IS) with Automated Bids
2. Bad Targets Are Just as Bad as Bad Bids
3. Changing Bid Aggressiveness Works Differently for tCPA & tROAS
4. Having One Target ROAS Is Not Enough
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