first-party data

first-party data

Growth Hacking Warning: Ignored First‑Party Data Raises CPA 30%

Ignoring first-party data can raise your CPA by up to 30%, especially when privacy rules tighten. 30% of growth teams see CPA spike when they ignore first-party data. In my early days as a founder, I learned the hard way that cheap third-party lists left my ad spend bleeding. The