When an SNS topic is configured to fan out messages to multiple SQS queues, how does SNS deliver the messages?

easy📝 Conceptual Q1 of 15

AWS - SNS and SQS

ASNS sends a single message that is shared among all subscribed SQS queues.

BSNS sends a copy of each message to every subscribed SQS queue independently.

CSNS sends messages only to the first subscribed SQS queue and waits for confirmation before sending to others.

DSNS batches messages and sends them to one SQS queue at a time in a round-robin fashion.

Step-by-Step Solution

Solution:

Step 1: Understand SNS fan-out
SNS fan-out pattern means that when a message is published to an SNS topic, it is replicated and sent to all subscribed endpoints independently.
Step 2: Delivery to SQS queues
Each subscribed SQS queue receives its own copy of the message, ensuring parallel processing and decoupling.
Final Answer:
SNS sends a copy of each message to every subscribed SQS queue independently. -> Option B
Quick Check:
Each queue gets its own message copy [OK]

Quick Trick: SNS fan-out sends copies to all subscribed queues [OK]

Common Mistakes:

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