Is API throttling limitation per SNS service or per topic

Question

In the user manual, it says: For the standard SNS topic, the API throttling limitation is 30,000 messages per second. It doesn't mention this is per topic or per SNS service.

https://docs.aws.amazon.com/general/latest/gr/sns.html

Accepted Answer

The following quotas vary by AWS Region. The messages per second quota is based on the number of messages published to an Amazon `SNS region`, combining Publish and PublishBatch API requests.

Limits example:

US East (N. Virginia) Region = 30,000 messages per second

US West (Oregon) and  Europe (Ireland) Region = 9,000 messages per second

You can request a soft limit increase by opening a quota increase case in the Amazon Support Center.
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Is API throttling limitation per SNS service or per topic

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