As Socrates almost said: an unmeasured campaign isn’t worth launching. If you don’t have concrete goals and KPIs for your campaign (relating to profitability), then it’s certainly going to be a dead loss.
Not all metrics are created equal. While clicks and sessions might bring a smile to your face, they don’t make you money. They’re vanity metrics. Instead, it’s crucial to capture the metrics that will enable you to drive engagement, optimize your campaigns and scale.