Amazon Simple Notification Service (Amazon SNS), a messaging service that provides high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications, now supports AWS X-Ray active tracing with Amazon SNS FIFO topics. You can now view traces that flow through Amazon SNS FIFO topics to Amazon Simple Queue Service (Amazon SQS) FIFO queues, in addition to traversing the application topology in Amazon CloudWatch ServiceLens. You can use Amazon SNS FIFO topics, in combination with Amazon SQS FIFO queues, to build applications that require messages to be sent and processed in a strict sequence and without duplicates. You can enable AWS X-Ray active tracing using the Amazon SNS SetTopicAttributes API, Amazon SNS Management Console, or via AWS CloudFormation.
Source:: Amazon AWS