Amazon SNS increases default FIFO topic throughput by 10x to 3,000 messages per second

[Amazon Simple Notification Service](https://docs.aws.amazon.com/sns/latest/dg/welcome.html) (Amazon SNS) [First-In-First-Out](https://docs.aws.amazon.com/sns/latest/dg/sns-fifo-topics.html) (FIFO) topics now support 3,000 messages per second, per topic. All existing and future FIFO topics now have this new quota by default, with no configuration change required. To benefit from maximum throughput in FIFO topics where message order is strictly maintained within each message group, distribute your messages evenly over a large number of message group IDs, as messages from different message groups are delivered in parallel. Amazon SNS is a messaging service for Application-to-Application (A2A) and Application-to-Person (A2P) communication. The A2A functionality provides topics for high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications. SNS Standard topics provide best-effort ordering and at-least-once-delivery, while SNS FIFO topics support strict ordering and exactly-once delivery. Both Standard and FIFO topics support message fan-out to multiple subscriptions, with high durability, security, and support for message filtering. Amazon SNS FIFO topic throughput of 3,000 messages per second is available in all AWS Regions, except for AWS GovCloud (US) Regions. To learn more about this new feature, see the following: * [Message ordering and deduplication](https://docs.aws.amazon.com/sns/latest/dg/sns-fifo-topics.html), in the Amazon SNS Developer Guide * [Amazon SNS service endpoints and quotas](https://docs.aws.amazon.com/general/latest/gr/sns.html), in the AWS General Reference