Audience segmentation is one of the most effective ways to reduce your Cost Per Acquisition (CPA) in Google Ads. By narrowing your audience, you can reduce clicks from individuals who are outside of your ideal customer profile, and redirect your budget towards people who will likely convert. This way, you eliminate irrelevant impressions and achieve higher return on ad spend. When your ads target audiences likely to buy, your conversion rates will sky rocket, lowering your CPA. By doing so, you can align better with your campaign goals.
- Identify Target Audiences With Audience Insights
Google Ads audience segments are a great way to reach people based on who they are, their interests and habits, or how they’ve previously interacted with your business. Before you make any changes, review your Audience Insight report to analyse the traits, interests, and purchase behaviours of users who successfully convert.
Google offers several segment types to choose from including: Add In-Market, Affinity, and Detailed Demographic. These segments should be added to your campaigns and ad groups to boost performance by reaching segments while they browse websites, use apps, or watch videos.
- Apply observation mode
One common mistake is starting with Targeting mode, which can limit ads to only a select audience. However, lowering your Google Ads Cost Per Acquisition (CPA) with audience segments relies on the Observation setting rather than Targeting. By observing how specific audiences convert, you can identify high-performing demographics, block wasteful segments, and adjust bids without minimising your overall reach.
The Observation mode allows you to monitor the performance of different audience segments without narrowing your campaign’s reach. Incorporate In-market, Affinity, and Detailed Demographic audiences to your ad groups in the observation setting and let the campaign run. By adding audiences to specific campaigns or ad groups, you can collect data based on the performance of each segment. This way you can see if certain segments have an unusually high conversion rate or cost.
- Adjust bids based on performance
Once you have collected performance data from your segments, start by reviewing and identifying the best-performing and worst-performing segments. You can adjust bids to lower your overall CPA. Specifically, you should increase bids on audience segments with high conversion rates. This will capture more of the high-intent traffic. Then, decrease bids on segments that click but rarely convert. Finally, use the exclusions setting to exclude audiences that completely drain your budget without any signs of conversion.
- Leverage Google’s smart bidding
Leverage Google’s Smart Bidding by combining the feature with your audience segments. You can do so by setting up a Target CPA bidding strategy. Once enabled, Google’s algorithm will automatically factor in your observed audience data and bid higher when a user with those traits enters a search auction.
In this stage, it’s important to be patient. Smart Bidding takes time to learn and adjust to market conditions. Avoid changing your strategy too frequently. For instance, refrain from making adjustments more than once every 60 days to allow the AI to optimize fully.
Conclusion
Lowering your CPA with audience segments requires an ongoing process of observing, refining, and optimising. Start broad in Observation mode and let the data guide your bid adjustments. Then, use Smart Bidding to automate the hard work over time. When done consistently, you can steadily improve your campaign efficiency and lower your CPA.