Privacy regulation assumes you can find every record connected to a single person. Without an identity graph, that's hard. A customer might exist as a different identifier in your CRM, your analytics warehouse, your ad platform, and your email tool, with nothing definitively connecting them. A graph turns that fragmented picture into a single resolvable user, which means deletion and access requests can propagate across every connected identifier in one operation. The remaining question is where the graph runs. Graphs hosted in vendor infrastructure require trust in their deletion logic. Graphs in your own cloud put compliance under your own control.