How many conversions do I need before Google's AI can actually optimize my campaigns?
The short answer
Google recommends at least 30-50 conversions in the trailing 30 days before Performance Max has enough signal to optimise well, below that you're essentially running on guesswork with an AI label on it. Give a new PMax campaign 4-6 weeks and that conversion volume before you draw any conclusions or start pulling levers. If you can't hit that volume yet, run tighter standard Search and Shopping campaigns until you can.
A quick summary to orient you. The real value is below: the resources worth your time, from people who've actually done it, not us.
Here are the resources
Hand-picked from around the web, each with a note on why it earns your time. India-specific ones carry a badge.
Why we picked it
The canonical explanation of what PMax actually optimises (bidding, budget, audiences, creatives, attribution) straight from Google, read this before trusting a blog's interpretation of what the black box is doing.
Why we picked it
A thorough current reference covering setup through optimisation, useful as a single bookmark to return to as your PMax account matures past the first few weeks.
Why we picked it
A Shopify-specific PMax case study close to the category and platform most Indian D2C founders are actually running, useful for calibrating what realistic early results look like.
Why we picked it
Free, official, and the source of truth for Google's own terminology and mechanics, start here before an agency's sales deck teaches you their version of how Google Ads works.
