With Amazon EventBridge, you pay only for events published to your event bus and events ingested for event replay. There are no additional charges for rules or event delivery. There are no minimum fees or upfront commitments. All state change events published by Amazon Web Services services by default are free.
Event buses
| Amazon Web Services default service events | Free |
| Custom events | ¥ 6.75/million custom events published |
| ¥ 6.75/million custom events from opt-in Amazon Web Services services (for example, Amazon Simple Storage Service (S3) event notifications) | |
| Third-party (SaaS) events | ¥ 6.75/million events published |
| Cross-account events | ¥ 6.75/million cross-account events sent |
Size of payloads: Each 64 KB chunk of a payload is billed as one event (for example, an event with a 256 KB payload is billed as 4 requests).
Pricing example
If a customer's application published 5 million events in one month, your charges would be calculated as follows:
Monthly events = 5M events (all equal to our less than 64 KB each)
Monthly events charges = 5M * ¥ 6.75/M = ¥33.75 per month
Event replay
| Archive processing | ¥ 2.47 per GB |
| Storage / Month | ¥ 0.195 per GB / Month |
For replay, you are billed as per the custom events pricing above.
Pricing example
If your application published 2 million events in a month, each averaging 6 KB, and you enabled archiving on your development event bus for replay and you replay all of them, your charges would be calculated as follows:
Monthly events = 2M events * ¥ 6.75/M = ¥ 13.50 per month.
Archive Processing = 2M events * 6KB / (1024 * 1024) * ¥ 2.47/GB = ¥ 28.27
Storage Costs = 2M events * 6KB / (1024*1024) * ¥ 0.195/GB = ¥ 2.23 per month
Replayed Events = 2M * ¥ 6.75/M = ¥ 13.50 per month
Total monthly EventBridge charges = ¥ 13.50 (event publishing) + ¥ 28.27 (Archive Processing) + ¥ 2.23 (Storage) + ¥ 13.50 (Replaying) = ¥ 57.50 per month.
Get started building with Amazon EventBridge in the Amazon Web Services Management Console.
Get a deeper understanding of EventBridge in the Developer Guide.