Which service connects IoT devices to the AWS cloud using protocols like MQTT, HTTPS, and LoRaWAN?

• A. AWS IoT Core
• B. Amazon Pinpoint
• C. AWS IoT Device Management
• D. AWS Device Farm

Answer: (A)

IoT Core is the service that connects IoT devices to the AWS cloud using protocols like MQTT, HTTPS, and LoRaWAN. It provides secure, scalable device connectivity and messaging, with MQTT and HTTPS as standard IoT communication options, and it supports LoRaWAN through a LoRaWAN Network Server integration so long-range, low-power devices can reach the cloud. It also handles device identity, authentication (such as X.509 certificates and mutual TLS), authorization, and a rules engine to route device data to other AWS services like Lambda, DynamoDB, or S3. The other options serve different purposes—Pinpoint is for user engagement messaging, IoT Device Management focuses on managing fleets and updates rather than core connectivity, and Device Farm is for testing applications—so they don’t fit the requirement of connecting IoT devices to AWS using those protocols.