We've built our agency around hitting target campaign goals. It's our north star when a campaign kicks off and it's what our entire focus, strategy, and reports revolve around. That's why it's really important that our team, your team, and the end client are on the exact same page with what success looks like.
If it were up to us, we'd recommend getting towards a cost per lead (CPL) or cost per acquisition nCAC) goal with your client. However, we consider a campaign successful when we're hitting the goal that has been provided by your team. If you'd like a complete guide to goals, check out this article.