Auto-tagging is an AdWords feature that can help you track your ad performance using custom software or website tracking programs like Google Analytics. When enabled, it automatically creates custom destination URLs with a parameter called gclid added to your landing page URL.

This value is now available to you in the Click Performance Report as the “GclId” field. This means you can now use auto-tagging and easily combine this data with information from other sources, like web analytics or webserver logs, when analyzing conversion performance and optimizing your campaigns.

Auto-tagging is available to all AdWords users, and can be enabled via the User Interface only. It’s a per-account setting available on the My Account -> Preferences page.

Feel free to reach out to us via the G+ page or the forum if you have any questions regarding this feature.