This topic describes the instance types of Message Queue for MQTT.
|Item||Enterprise Platinum Edition||Basic Edition||Pay-as-you-go|
|Instance type||Dedicated instance with physical isolation. Each Enterprise Platinum Edition instance owns exclusive underlying hardware resources and is deployed as one independent cluster. Therefore, this type of instance is not affected by traffic peaks of other users and can provide after-sales services and stability assurance at a higher priority.||Shared instance with logical isolation. Multiple Basic Edition instances share the underlying hardware resources and the same backend cluster. Message Queue for MQTT ensures service availability in multitenancy scenarios.||Shared instance with logical isolation. Multiple pay-as-you-go instances share the underlying hardware resources and the same backend cluster. Message Queue for MQTT ensures service availability in multitenancy scenarios.|
|Billing method||Subscription. You must pay a yearly or monthly charge of the instances based on their specifications in advance.||Pay-as-you-go. You are charged for the instances based on the actual usage.|
|Service support||DingTalk group for product consultation||√||√||√|
|Alibaba Cloud ticket system||√||x||x|
|Support for system launches and sales promotions||√||x||x|
|Exclusive DingTalk group||√||x||x|
|Dedicated service manager support||√||x||x|
|Dedicated technical expert support||√
The core R&D team provides technical support.
|Point-to-point (P2P) troubleshooting||√
Customer Services are available on a 24/7 basis.
|Features||Upper limit of subscriptions (rules) for a single device||Theoretically, the upper limit is not limited.
You can customize an upper limit of subscriptions (rules) for a single device.
|A maximum of 30 subscriptions are supported.||A maximum of 30 subscriptions are supported.|
|Message retention period||Messages can be retained for up to seven days.
You can customize a message retention period.
|Messages can be retained for up to three days.||Messages can be retained for up to three days.|
You can customize the protocol type.
|Client status notification||√||√||√|
|Authorization to third-party accounts||√||√||√|
|Management API operations||√||√||√|