Determining the success of a Google Ads campaign often boils down to your initial objectives. If your goal was to increase brand awareness, then metrics like impressions (the number of times your ad was shown) and reach (the number of unique users who saw your ad) would be crucial. If you're aiming to increase client inquiries or consultations, then the conversion rate (the number of desired actions taken divided by the number of clicks) would be a key success metric.