Digital advertising is fundamentally changing, making first-party data more important than ever. With the phasing out of third-party data used for targeting and buying ad space across digital media properties and the increased recognition of the value of first-party data, retailers are acutely aware of its potential.

In this post, I will briefly explain what first-party data is, its importance for retailers, how they can leverage it and why it plays a key role in building retail media networks or similar company-owned media networks that can be used to market ad space to its partners and customers.