Amazon SNS Standard versus AWS IoT Core

29 Oct 2025

Learn how Amazon SNS Standard differs from AWS IoT Core.

	Amazon SNS Standard	AWS IoT Core
Scaling	not disclosed (default soft limit depends on region; e.g., 9000 msg/sec in eu-west-1)	not disclosed
Max. message size	256 KB	128 KB
Persistence	no	up to 1 hour
Replication	Multi-AZ	Multi-AZ
Order guarantee	no	no
Delivery guarantee	at least once	at least once / at most once
Pricing	per message	per message + connection duration
Protocols	AWS Rest API	MQTT, AWS Rest API
AWS Integrations	Lambda, SQS, webhook	Lambda, SQS, SNS, and many more
License	AWS only	AWS only
Encryption at rest	yes	no
Encryption in transit	yes	yes

Further reading