The most common goals that you can set for measuring your success are the following- Click Through Rate, Cost Per Click, and Conversions. The most crucial step is to ensure that you set your goals for your ad campaign first. This is how you will be able to understand, track and measure your metrics to know where your ad is performing or not. Once you have established your campaign goals, and you have launched your ad campaign, it is important to do routine maintenance such as product A/B testing.