Google has announced the roll out of the long-awaited for campaign-level audience targeting. Gone are the days of wasting your valuable time tediously applying your audiences to the various ad groups within your campaign one at a time. Audience bid adjustments? Campaign level.
Google made the official announcement on their official AdWords blog on which they wrote:
Campaign-level audience lists also make it easy to measure and change your bid adjustments. Instead of trying to change your bid adjustments for each individual ad group, you can confidently optimize at the campaign level where you’re more likely to have enough data to make an informed decision.
But what if you still only want to apply it at the ad group level you ask? Let not your heart be troubled. That ability is still possible and Google has not indicated any desire to take that away.