Create a new ad from scratch
Select the ad environment
Select the environment that you want the ad to run in.
Google Web Designer supports Google AdMob, Google Ads, and Display & Video 360 environments. (Select Display & Video 360 for Studio and Campaign Manager.) When the ad is published, Google Web Designer adds the appropriate enabler code for the environment you've chosen, and lets you choose from a set of options appropriate for the ad type.
You can also choose to create a non-Google ad. These ads are published without any enabler code, and may need to be modified to work with the ad environment of your choice.
You can set a default ad environment for new documents in your preferences.