Channel CPA is helpful to benchmark yourself against the market and competitors.
CPA gets really actionable and affects our daily operations when we look at it per campaign level (and ideally in time). Here’s what happens behind the curtains when we’re running marketing campaigns:
Marketing campaign profitability boils down to 2 numbers –LTV (how much money we’ll earn from a user until they churn) and CPA (how much money we paid for that user). If campaign’s CPA is higher than LTV it means we’re losing money and we should stop that campaign. ...