Amazon MSK versus Amazon EventBridge (formerly CloudWatch Events)
Learn how Amazon MSK differs from Amazon EventBridge (formerly CloudWatch Events).
| Amazon MSK | Amazon EventBridge (formerly CloudWatch Events) | |
|---|---|---|
| Scaling | 30 brokers per cluster; you need add/remove brokers and reassign partitions manually |
not disclosed (default soft limit depends on region; e.g., 10,000 msg/sec in eu-west-1) |
| Max. message size | configurable (default 1 MB) |
256 KB |
| Persistence | forever (up to 16384 GiB per broker) |
archiving is possible |
| Replication | Multi-AZ (optional) |
Multi-AZ |
| Order guarantee | within a partition |
no |
| Delivery guarantee | at least once |
|
| Pricing | per broker hour + provisioned storage |
per message |
| Protocols | AWS Rest API |
|
| AWS Integrations | Lambda |
Lambda, SQS, SNS, and many more |
| License | open source (Apache Kafka) |
AWS only |
| Encryption at rest | yes |
yes |
| Encryption in transit | yes |
yes |