Pre-tag your site before launching campaigns so you can see forecasting data as soon as a campaign starts.
Tag your site early and build an inventory forecast
Set up inventory in Google Ad Manager with AdSense disabled for all ad units (this ensures AdSense doesn't deliver ads before you're ready). If you'll be employing key-values, be sure to define the key-values in the network.
Tag your site with Google Ad Manager tags. This will initiate forecasting, but not return any ads.
After the forecast has collected enough data, you can create orders.
- If you're transitioning your inventory to Google Ad Manager from another ad server:
- Pause your new orders immediately after they're activated to ensure they don't serve. Use a start date close to the date you expect your existing ad server to stop serving ads.
- When appropriate, stop ads from your existing ad server, then unpause the Google Ad Manager orders. (Unpause can take effect within two minutes.)