A company wants to implement an IoT solution using the service available in Azure. Which of the following would meet the below requirement? 
“Provide bi-directional communication between IoT application and the devices.”

Answer options:

A.IoT Hub
B.IoT Central
C.IoT Edge
D.Azure Time Series Insights

Answer – A 
The Microsoft documentation mentions the following. 

Since this is clearly mentioned in the documentation, all other options are incorrect. 
For more information on Azure IoT, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/iot-fundamentals/iot-introduction

Since this is clearly mentioned in the documentation, all other options are incorrect. 
For more information on Azure IoT, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/iot-fundamentals/iot-introduction