AWS IoT Core is Amazon’s managed cloud service that enables secure and scalable device connectivity. It supports protocols such as MQTT, HTTPS, and WebSockets, allowing devices to exchange data with AWS services. IoT Core handles message routing, filtering, and transformation, enabling flexible workflows. It integrates with AWS Lambda, DynamoDB, and analytics services for building complete IoT solutions. Security is a central focus, with per-device authentication and fine-grained access control. AWS IoT Core is widely used for consumer IoT, industrial automation, and large-scale deployments.