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Amazon SNS versus Amazon MSK

21 Sep 2020

Learn how Amazon SNS differs from Amazon MSK.

Amazon SNS Amazon MSK
Scaling

infinite

30 brokers per cluster; you need add/remove brokers and reassign partitions manually

Max. message size

256 KB

configurable (default 1 MB)

Persistence

no

forever (up to 16384 GiB per broker)

Replication

Multi-AZ

Multi-AZ (optional)

Order guarantee

no

within a partition

Delivery guarantee

at least once

up to the consumer

Pricing

per message

per broker hour + provisioned storage

Protocols

AWS Rest API

Kafka protocol

AWS Integrations

Lambda, SQS, webhook

n/a

License

AWS only

open source (Apache Kafka)

Encryption at rest

yes

yes

Encryption in transit

yes

yes