SNS
Fully managed Pub/Sub service for A2A and A2P messaging.
Amazon SNS is a highly available, durable, secure, fully managed pub/sub messaging service that enables you to decouple microservices, distributed systems, and event-driven serverless applications. Amazon SNS provides topics for high-throughput, push-based, many-to-many messaging.
What is the difference between Amazon SNS and Amazon SQS? - https://stackoverflow.com/questions/13681213/what-is-the-difference-between-amazon-sns-and-amazon-sqs
(Fanout Pattern) SQS Queues and SNS Notifications – Now Best Friends - https://aws.amazon.com/blogs/aws/queues-and-notifications-now-best-friends/