Amazon SQS FIFO versus Amazon EventBridge (formerly CloudWatch Events)

27 Mar 2024

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

Amazon SQS FIFO Amazon EventBridge (formerly CloudWatch Events)
Scaling

3000 msg/sec (batch write)

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

Max. message size

256 KB

256 KB

Persistence

up to 14 days

archiving is possible

Replication

Multi-AZ

Multi-AZ

Order guarantee

yes

no

Delivery guarantee

exactly-once possible

at least once

Pricing

per message

per message

Protocols

AWS Rest API

AWS Rest API

AWS Integrations

Lambda

Lambda, SQS, SNS, and many more

License

AWS only

AWS only

Encryption at rest

yes

yes

Encryption in transit

yes

yes