Amazon EventBridge (formerly CloudWatch Events) versus Amazon MSK

17 Oct 2021

Learn how Amazon EventBridge (formerly CloudWatch Events) differs from Amazon MSK.

Amazon EventBridge (formerly CloudWatch Events) Amazon MSK
Scaling

not disclosed (default soft limit depends on region; e.g., 10,000 msg/sec in eu-west-1)

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

Max. message size

256 KB

configurable (default 1 MB)

Persistence

archiving is possible

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, SNS, and many more

Lambda

License

AWS only

open source (Apache Kafka)

Encryption at rest

yes

yes

Encryption in transit

yes

yes