Adobe's real-time customer data platform processes billions of profiles daily, handling massive streams of behavioral data, creating unified customer profiles, and activating them for personalization in milliseconds. To meet these demands, Adobe engineers designed a new kind of data layer powered by a tiered storage Aerospike architecture, resulting in faster performance, fivefold increase in scale, and 89% reduction in infrastructure costs. The platform's personalization engine powers dynamic web content, in-app product recommendations, and real-time audience segmentation, with users expecting immediate, tailored experiences. To achieve this, the platform ingests behavioral data from known and anonymous users across every touchpoint, creates identities on the fly, and activates segments for marketing, analytics, and experience delivery.