What is the Azure Event Grid pricing for KeepAlive related messages?

AFAIK, Azure Event Grid does not bill for MQTT-level keep-alive operations. According to the official Azure Event Grid pricing FAQ for the Standard tier (https://azure.microsoft.com/en-us/pricing/details/event-grid), MQTT operations such as CONNECT, SUBSCRIBE, UNSUBSCRIBE, PUBLISH, dropped publishes, and client session lifecycle events are specifically listed as billable operations—but keep-alive messages (like PINGREQ and PINGRESP) are not mentioned in that list. Instead, billing focuses on events that carry data—such as ingested MQTT publishes, filters, enriched routing, delivery attempts, etc.—and these are charged per 64 KB data chunk).

In Azure Event Grid (Standard tier), the billing applies to:

• MQTT PUBLISH operations (both inbound & outbound)
• CONNECT, SUBSCRIBE, UNSUBSCRIBE
• Dropped publish requests (e.g., due to expiry or session overflow)
• Enrichment and routing (counted as event operations) All of these are billed based on the payload size (per 64 KB chunk)

PINGREQ (keep-alive) messages are not included in that charge list.

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hth

Marcin