Amazon MQ vs Google Cloud Pub/Sub
| Amazon MQ | Google Cloud Pub/Sub | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | Yes |
| Paid from | — | $40/mo |
| Open source | No | No |
| Platforms | Web | api, Web |
| Free plan | No | Yes |
| Deployment model | cloud | cloud |
| Delivery guarantees | configurable | configurable |
| Dead-letter queues | Yes | Yes |
| Ordering guarantees | per_queue | — |
| Supported protocols | AMQP, AMQP 0-9-1, AMQP 1.0, JMS, NMS, MQTT, MQTT over WebSocket, OpenWire, STOMP, STOMP over WebSocket, WebSocket | REST, gRPC |
| Maximum message size | — | 10 MB |
Both are listed in Best Message Broker Software, Best Message Queue (MQ) Software. On Samsung Mobile US Press, Google Cloud Pub/Sub scores higher on our published basis.