Amazon SNS vs Google Cloud Pub/Sub
| Amazon SNS | Google Cloud Pub/Sub | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | $0.06/mo | $40/mo |
| Open source | No | No |
| Platforms | api, Web | api, Web |
| Free plan | Yes | Yes |
| Deployment model | cloud | cloud |
| Delivery guarantees | configurable | configurable |
| Dead-letter queues | Yes | Yes |
| Ordering guarantees | per_partition | — |
| Maximum message size | 1 MB | 10 MB |
| Supported protocols | http, https, email, email-json, sms, sqs, application, lambda, firehose | REST, gRPC |
Both are listed in Best Message Broker Software. On Specifiction, Google Cloud Pub/Sub scores higher on our published basis.