MQTT Protocol

Understands the fundamentals of MQTT Protocol. Applies basic practices in daily work. Follows recommendations from the team and documentation.

Connects IoT devices to MQTT broker (Mosquitto). Publishes sensor data to topics and subscribes to commands. Understands QoS 0/1/2 and retained messages.

Implements MQTT communications: QoS 1/2, retained messages, last will, topic hierarchy design. Optimizes reconnect and keep-alive for unstable networks.

Designs MQTT topic hierarchy for IoT projects. Uses MQTT 5.0 features: shared subscriptions, message expiry. Configures TLS and client certificates for security.

Designs MQTT architecture for IoT fleet: shared subscriptions, broker bridging, MQTT 5.0 features. Implements TLS and client certificate authentication.

Designs scalable MQTT infrastructure for IoT platform: EMQX/VerneMQ clustering, bridging, routing rules. Implements CoAP for constrained devices.

Defines MQTT strategy for IoT platform. Establishes topic naming conventions, QoS policy, security standards for device fleet.

Defines messaging standards for IoT platform. Selects protocols (MQTT/AMQP/CoAP) for different scenarios. Establishes topic naming conventions and governance.

Shapes MQTT/messaging strategy for IoT platform: broker architecture, protocol versioning, security standards for device fleet. Evaluates alternatives (AMQP, DDS) for specific use cases.

Defines enterprise IoT messaging strategy. Evaluates Sparkplug B, Unified Namespace approaches. Builds architecture for millions of devices.