Each time you create a new Playground Ad the Playground tool will generate a unique URL for your ad as show below. You can alter your creative or use the Wizard as often as you like. All changes are applied to this unique URL.
The build URL is the URL created when the Preview button is pressed.
You can also get the build URL by selecting File, then select Finalise ad in the top left header menu.
Please send this build URL along with any trackers to firstname.lastname@example.org when you're ready to generate tags.