Amazon EventBridge
Enterprise service bus (ESB) software
Data integration tools
Cloud data integration software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
Take the quiz to check if Amazon EventBridge and its alternatives fit your requirements.
Pay-as-you-go
Free Trial unavailable
Free version
Small
Medium
Large
-
What is Amazon EventBridge
Amazon EventBridge is a managed event bus service on AWS that routes events between AWS services, custom applications, and supported SaaS partners. It is used by cloud and integration teams to build event-driven integrations, decouple microservices, and automate workflows using rules and targets. The service supports event filtering, schema discovery/registry, and multiple event sources including AWS services, custom events, and partner event sources. It is typically implemented as part of an AWS-native integration architecture rather than as a full ESB suite.
AWS-native event routing
EventBridge integrates directly with many AWS services as event sources and targets, reducing the need for custom polling or glue code. Rules-based filtering and routing supports fan-out patterns and service decoupling. Managed infrastructure reduces operational work compared with self-managed brokers or ESB runtimes.
Multiple event ingestion options
The service supports AWS service events, custom application events, and partner event sources, enabling a common routing layer across different producers. It also supports API Destinations for calling external HTTP endpoints with configurable authentication. This helps teams connect AWS workloads to external systems without deploying additional middleware for basic event delivery.
Schema and governance features
EventBridge provides schema discovery and a schema registry to document event structures and generate code bindings for some languages. This supports consistent event contracts and reduces integration errors when producers change payloads. It can be combined with AWS IAM and resource policies to control who can publish or consume events across accounts.
Not a full ESB suite
EventBridge focuses on event routing and does not provide the breadth of ESB capabilities such as rich mediation flows, complex protocol transformation, or extensive built-in B2B/EDI tooling. Orchestration and transformation typically require additional AWS services (for example, workflow engines, functions, or ETL tools). Organizations expecting an all-in-one integration runtime may need complementary components.
AWS ecosystem dependency
While it can deliver to external HTTP endpoints, the deepest integrations and operational experience are within AWS. Multi-cloud or on-premises-heavy environments may require additional connectivity patterns and tooling to achieve comparable capabilities outside AWS. This can increase architectural complexity when standardizing across heterogeneous platforms.
Event delivery constraints
EventBridge enforces service quotas and has limits around event size and throughput that may require partitioning across buses or additional buffering for high-volume workloads. Delivery semantics and ordering guarantees vary by target and pattern, so some use cases need extra design for idempotency and replay. Debugging distributed event flows can also require multiple AWS observability services and disciplined correlation practices.
Plan & Pricing
Pricing model: Pay-as-you-go (pay per event/request; pricing shown per 1,000,000 events/requests unless otherwise noted)
Free tier / free features:
- AWS management events ingestion to EventBridge event bus: $0.00 per 1,000,000 events (ingestion is free).
- Schema Registry usage: free.
- Schema Discovery: free tier of 5,000,000 ingested events per month; additional Schema Discovery usage is charged (see Example costs).
- EventBridge Scheduler: Free Tier of 14,000,000 invocations per month.
Example costs / component pricing (official AWS EventBridge pricing page + FAQs):
- Event buses (ingestion):
- AWS management events (ingestion): $0.00 per 1,000,000 events.
- AWS opt-in data events, custom events, partner events (ingestion): $1.00 per 1,000,000 events.
- Payload billing: each 64 KB chunk of payload = 1 event (e.g., 256 KB = 4 events).
- Event buses (delivery):
- Delivery to a service in the same AWS account: $0.00 per 1,000,000 events (in many cases).
- Delivery to a service in a different AWS account / to another account: examples shown on the pricing page indicate $1.00 per 1,000,000 events for some cross-account deliveries; partner-events delivered to a different account example shows $0.05 per 1,000,000 events (see official examples).
- Delivery to another event bus (cross-account or as applicable): $1.00 per 1,000,000 events in example calculations for custom events.
- Pipes:
- $0.40 per 1,000,000 requests (each 64 KB chunk = one request; price applied to requests entering the pipe after filtering).
- Scheduler:
- 14,000,000 free invocations per month (Free Tier). Additional invocations: $1.00 per 1,000,000 invocations (per pricing examples).
- API destinations:
- $0.20 per 1,000,000 invocations/events to public or private endpoints (example shows 2M * $0.20/M = $0.40).
- Additional data transfer / PrivateLink / VPC Lattice charges may apply.
- Event replay / archives:
- Replayed events billed at custom events pricing: $1.00 per 1,000,000 events (for replayed events per examples).
- Archive processing (when archiving & replaying): $0.10 per GB processed.
- Storage: $0.023 per GB-month (storage cost shown in examples).
- Schema Registry / Schema Discovery:
- Schema Registry: free to use.
- Schema Discovery: Free tier of 5,000,000 ingested events per month; additional Schema Discovery ingestion: $0.10 per 1,000,000 ingested events (per EventBridge FAQ).
Pricing notes / billing units:
- Many EventBridge components are billed per 1,000,000 events/requests (page uses $X.XX/M shorthand).
- Payload sizing rules: EventBridge commonly bills per 64 KB chunk (events) or per 8 KB chunk for Schema Discovery payloads (see Schema Discovery note).
- Additional AWS data transfer, PrivateLink, or other AWS service charges may apply.
Discounts / commitments:
- No fixed subscription tiers; pricing is pay-as-you-go. AWS may offer volume/enterprise discounts or committed/enterprise pricing through enterprise support/discount programs (not detailed on the public pricing page; contact AWS sales for quotes).
Seller details
Amazon Web Services, Inc.
Seattle, Washington, USA
2006
Subsidiary
https://aws.amazon.com/
https://x.com/awscloud
https://www.linkedin.com/company/amazon-web-services/
