SNS is the simplest AWS messaging service and the most misunderstood. It's not a queue, it's not EventBridge, and it's not just for sending emails. Here's how I actually use SNS -- fan-out to SQS, message filtering, FIFO topics, and the patterns that keep distributed systems decoupled.
AWS in Production
Lambda, DynamoDB, S3, CDK, IAM -- real AWS patterns.
