What is Anypoint MQ and how does it differ from a queue vs an exchange?

Anypoint MQ is MuleSoft's cloud messaging service for asynchronous, decoupled integration. Queue: Point-to-point messaging. A message published to a queue is consumed by only one subscriber (competing consumers). Messages are stored until consumed or expired. Supports FIFO ordering. Dead Letter Queue (DLQ): messages that cannot be processed after a configured number of attempts are moved to the DLQ for investigation. Exchange (Anypoint MQ Exchange — not to be confused with Anypoint Exchange marketplace): Pub/sub messaging. A message published to an exchange is broadcast to all bound queues simultaneously. Multiple consumers each receive a copy. At-least-once delivery: Anypoint MQ guarantees at-least-once delivery — acknowledge messages explicitly after successful processing; unacknowledged messages are redelivered. NACK (negative acknowledgement) returns the message to the queue immediately. Anypoint MQ is an alternative to Kafka, ActiveMQ, or SQS for MuleSoft-native asynchronous patterns.