Bang on. The creative gets all the love, but the CTA and the surrounding technical infrastructure is where the real leverage sits. I've seen too many campaigns where a beautiful ad leads to a generic "Learn More" button that sends people to a homepage with zero contextual landing page. That's a leaky bucket.
For me, the CTA isn't just a button copy exercise-it's a conversion path optimisation problem. I'll often build a simple server-side script to dynamically swap the CTA text based on UTM parameters or referral source. Feels like overkill until you see the conversion rate jump 30 % just by matching the CTA language to the ad headline.
You're right that a powerful CTA gets them through the door, but the real win is making sure the door actually opens to the right room.
