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Amazon SNS FIFO topics are now available in AWS GovCloud (US) Regions

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You can now use Amazon Simple Notification Service (Amazon SNS) FIFO topics in the AWS GovCloud (US) Regions in combination with Amazon Simple Queue Service (Amazon SQS) FIFO queues, to build applications that require messages to be sent and processed in a strict sequence and without duplicates. SNS FIFO is intended for customer use cases where it is critical to maintain the consistency in processing messages across multiple independent services in a strictly ordered manner. Example use cases include bank transaction logging, stock tickers, flight trackers, news broadcasting, inventory management, vote tabulation, and price updates. Amazon SNS is a fully managed, reliable, and highly available pub/sub messaging service that enables you to decouple microservices, distributed systems, and serverless applications. Both standard and FIFO topics support fanning out messages to multiple subscriptions with high durability, filtering, encryption, and privacy, while FIFO topics provide the added benefit of ordering and deduplication of messages. Using SNS FIFO topics and SQS FIFO queues together, you can now build modern applications that leverage a publish/subscribe architecture without writing custom code for ordering and message deduplication. Amazon SNS FIFO topics are now available in the AWS GovCloud (US) Regions. To learn more about Amazon SNS FIFO topics, see the following: * [Introducing Amazon SNS FIFO – First-In-First-Out Pub/Sub Messaging](https://aws.amazon.com/blogs/aws/introducing-amazon-sns-fifo-first-in-first-out-pub-sub-messaging/) and [Building event-driven architectures with Amazon SNS FIFO](https://aws.amazon.com/blogs/compute/building-event-driven-architectures-with-amazon-sns-fifo/) blog posts * [Amazon SNS FIFO topics](https://docs.aws.amazon.com/sns/latest/dg/sns-fifo-topics.html) and [Amazon SQS FIFO queue](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html)s in their respective Developer Guides * For details on pricing, visit the [Amazon SNS pricing page](https://aws.amazon.com/sns/pricing/)