Google Ad Manager (GAM) is the leading ad server in the ad tech industry and is free to use. GAM is used by the top ad monetized publishers in the world. GAM acts as the source of truth for your ad inventory that enables you to:
- Compete many ad networks against each other to boost RPMs (Revenue per 1000 impressions).
- Run direct sales ads on the same ad placements as programmatic ads.
- Get better ad revenue performance from AdSense.
- Fix ad inventory problems more easily.
See our DFP Tutorial: How to Create a Doubleclick for Publishers Account: