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Amazon MSK versus AWS IoT Core

22 Jan 2021

Learn how Amazon MSK differs from AWS IoT Core.

Amazon MSK AWS IoT Core
Scaling

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

not disclosed

Max. message size

configurable (default 1 MB)

128 KB

Persistence

forever (up to 16384 GiB per broker)

up to 1 hour

Replication

Multi-AZ (optional)

Multi-AZ

Order guarantee

within a partition

no

Delivery guarantee

up to the consumer

at least once / at most once

Pricing

per broker hour + provisioned storage

per message + connection duration

Protocols

Kafka protocol

MQTT, AWS Rest API

AWS Integrations

n/a

Lambda, SQS, SNS, and many more

License

open source (Apache Kafka)

AWS only

Encryption at rest

yes

no

Encryption in transit

yes

yes