The ongoing transformation of media is driving a significant shift of investments, once destined to third-party cookies, to proprietary data nurturing and data management projects. These projects have now become fully-fledged media performance tools. In this new scenario, data ownership is crucial: building your own consensual customer base allows you to generate monetizable value over time. This takes place through the activation of strategic partnerships and co-marketing activities on databases with users who have already provided consent to other brands with in-target audiences, thus expanding business opportunities and optimising return on investment.