Large organizations already hold much of the information they need about the people they serve, but it is fragmented across dozens of systems that rarely agree. This free field guide explains how to build an operational Single View that survives production: a continuously updated, governed view of each customer or citizen, assembled from the systems that already hold the data.

It covers the reference architecture, the document data model, identity resolution, governance, privacy and sovereignty, industry patterns in banking, insurance, telecom, retail, public administration and healthcare, a worked example, anti-patterns and an adoption checklist.

Real-World Architectures is a series of short, practice-first field guides by Mario Noioso on data, systems and institutions.