This article examines who consumes a modern Financial Services data platform and why their differing needs must shape its architecture. It identifies four core consumer groups, operational systems, analytics communities, finance and reconciliation functions, and governance and regulators, alongside additional emerging consumers. By analysing how each group interacts with data, the article explains why layered architectures, dual promotion flows, and semantic alignment are essential. Ultimately, it argues that platform value is defined by consumption, not ingestion or technology choices.