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Domain 2.2: Data IntegrationDomain 2Data IntegrationEvent HubsStreaming

AZ-305 · Question 22 · Domain 2.2: Data Integration

An IoT startup is deploying 100,000 smart thermostats. Each thermostat sends telemetry data (temperature, humidity) every 5 seconds.

You need to design an ingestion layer capable of receiving millions of events per second with low latency. The data must be buffered and then read by multiple downstream consumer applications simultaneously.

Which Azure service should you recommend for the ingestion layer?

Answer options:

A.

Azure Service Bus

B.

Azure Event Grid

C.

Azure Event Hubs

D.

Azure Data Factory

How to approach this question

Recognize the keywords 'telemetry', 'millions of events per second', and 'buffered'.

Full Answer

C.Azure Event Hubs✓ Correct
Azure Event Hubs
Azure Event Hubs is a fully managed, real-time data ingestion service that's simple, trusted, and scalable. It can stream millions of events per second from any source to build dynamic data pipelines and immediately respond to business challenges. It uses a partitioned consumer model, allowing multiple downstream applications to read the buffered stream independently.

Common mistakes

Confusing Event Hubs (telemetry streaming) with Service Bus (transactional messaging) or Event Grid (reactive event routing).

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