From 00:00 on January 1, 2024, Function Compute provides a fee reduction for requests from the following Alibaba Cloud services: Message Service (MNS), ApsaraMQ for RocketMQ, ApsaraMQ for RabbitMQ, ApsaraMQ for Kafka, ApsaraMQ for MQTT, EventBridge, and CloudFlow. You are no longer charged for number of invocations for those requests. For more information, see the "Billable items" section in Billing overview.