The Alibaba Cloud account can play the following roles in Simple Message Queue (formerly MNS): queue owner, message producer, message consumer, topic owner, message publisher, and message subscriber.
Account
The Alibaba Cloud account. In SMQ, an account ID is used to identify an Alibaba Cloud account.
Queue-based SMQ services
Queue owner
After you activate SMQ for your Alibaba Cloud account, you can call the CreateQueue operation to create a queue. The Alibaba Cloud account is the queue owner and has full management permissions on the queue. You can view the account ID of the queue owner on the official website of Alibaba Cloud.
Message producer
The client that sends messages to the queue.
Message consumer
The client that receives messages from the queue.
Topic-based SMQ services
Topic owner
After you activate SMQ for your Alibaba Cloud account, you can call the CreateTopic operation to create a topic. The Alibaba Cloud account is the topic owner and has full management permissions on the topic.
Message publisher
The client that publishes messages to the topic.
Message subscriber
The client that receives messages from the topic.