Which health information exchange (HIE) architecture describes information that flows to more than one regional clinical data repository (CDR) and requested records sent from one regional authority?

The correct answer reflects the federated architecture of health information exchange (HIE). In this model, data is managed and stored across multiple regional clinical data repositories (CDRs) rather than being centrally stored in a single database. Each regional authority maintains control over its own data while allowing for interoperability and the exchange of information across different regions.

In a federated architecture, when a healthcare provider requests information, that request is routed to the appropriate regional CDRs, where the data resides. The records held by these CDRs can then be shared based on the established protocols and agreements among the participating entities. This setup enables a collaborative approach while still respecting the autonomy and governance of each regional authority involved.

This architecture is particularly beneficial for maintaining local governance over data while enabling a broader network for information sharing, especially in scenarios where various organizations need to access clinical records to provide comprehensive care without centralizing all data in one location.