Amazon SNS introduces First-in-First-out (FIFO) topics with strict ordering and deduplication of messages

You can now use Amazon Simple Notification Service (Amazon SNS) FIFO topics , 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.