In light of evolving privacy regulations, browser restrictions, and platform policies, the AdTech industry is shifting from reliance on third-party tracking to first-party data systems. This shift necessitates the development of data systems that collect and process user data directly, with explicit consent, ensuring compliance with modern privacy standards. First-party data, derived from direct user interactions with digital platforms, provides a solution to the diminishing availability of traditional user signals. Developers face challenges such as handling large volumes of real-time data, maintaining data quality, and addressing identity resolution without third-party cookies. Aerospike offers a real-time database solution designed to manage first-party data effectively, facilitating rapid data processing and compliance with privacy requirements. This technological adaptation is essential for building competitive, future-proof AdTech platforms that prioritize speed, accuracy, and privacy.