HIASHDI (HIAS Historical Data Interface) is an implementation of a REST API Server that stores HIAS network historical data and serves it to authenticated HIAS devices & applications by exposing the data through a REST API and pushing data through subscriptions.

The HIAS MQTT IoT Agent is based on FIWARE IoT Agents and bridges between HIAS devices that support the MQTT protocol, HIASCDI Context Broker, and HIASHDI Historical Broker.