The days of relying on third-party cookies and guesswork are over. In 2025, the smartest brands are turning to zero-party data, the information customers willingly and proactively share about their preferences, intentions, and values. Unlike behavioral data that’s inferred, zero-party data comes straight from the source, giving marketers unmatched clarity and trust. Why Zero-Party Data Matters Zero-party data is accurate because it’s declared, not assumed. When a customer tel