Data ingress and egress
When working with integrations around Azure Digital Twins, the terms data ingress and data egress will often appear. But what do they mean and what is the difference? Let's take a look:
- Data ingress: This is about ingesting data into an Azure digital twin by receiving data and events from upstream services.
- Data egress: This is about routing data from an Azure digital twin to connected endpoints such as Azure Event Hub, Azure Event Grid, and Azure Service Bus. Downstream services will be connected to one of those endpoints to get the data for different purposes.
We will explain event routes and endpoints later in this chapter. Data ingress and data egress have a lot to do with upstream and downstream services. Let's explain upstream and downstream services.
Upstream services such as Azure IoT Hub and Azure Logic Apps allow us to receive data and update an Azure digital twin. To ingest data from any of these sources, it is common...
