As seen in previous posts, Azure Digital Twins shows the current state of any twin in the Azure Digital Twins graph.
This current state is a combination of multiple items:
- twin name and model
- twin properties updates based on telemetry and/or business rules related to that telemetry
- twin properties updates based on predictions towards the future
- twin properties updates based on historical data
Azure Digital Twins also offers to store historical Twin property data. That historical data is made available using Azure Data Explorer, part of the data history connection, as explained in my previous post.
There, twin data can also be compared with twin graph knowledge using the ADX Kusto plugin for querying the ADT graph.
Still, that accompanying plugin is missing something. We have no historical knowledge of the graph itself including models and how these changed over time!
If we want this information, we need to be creative.

Can we add the missing pieces?
Let’s check out how we can explore the ADT graph history…
Doorgaan met het lezen van “Exploring Azure Digital Twins Graph history”