Amazon EventBridge

What Amazon EventBridge is

Amazon EventBridge is a serverless event broker for building applications that respond to events from applications, SaaS integrations, and AWS services. It routes events centrally across AWS accounts. Subscriptions can combine filtering, target configuration, and retry policies, while event buses support tens of thousands of subscribers and retain events for up to 365 days. Supported event formats include JSON, Avro, Protobuf, and Cloud Events. EventBridge also supports ordered delivery and sharing an event bus across accounts in an AWS Organization through AWS Resource Access Manager.

EventBridge Pipes provides point-to-point integrations with optional transformation, filtering, and enrichment. The service ingests events from supported SaaS platforms and routes them to AWS service targets; listed partners include Adobe, Datadog, MongoDB, Shopify, Stripe, and Snyk. API destinations can send events from a bus or pipe to web applications on public or private networks. CloudWatch metrics support event bus monitoring, and logs can go to CloudWatch Logs, S3, or Kinesis Data Firehose. IAM provides access control, and the service supports VPC endpoints and TLS 1.2 encryption in transit. AWS lists GDPR, SOC, ISO, DoD CC SRG, and FedRAMP compliance, as well as HIPAA eligibility. Customers remain responsible for their own compliance obligations. EventBridge has usage-based pricing with no minimum charge for event buses; AWS management events are ingested free, and Scheduler includes 14,000,000 free invocations per month.

Who it suits

EventBridge suits teams building decoupled microservices, routing business events across teams or accounts, or connecting SaaS services to AWS targets. It can also serve teams monitoring or auditing AWS environments that need event filtering, retries, and multiple logging destinations.

Limits

The usage-based plan has no minimum charge for event buses. AWS management events are ingested free, and Scheduler includes 14,000,000 invocations per month at no cost. Classic-bus payloads count in 64 KB billing chunks, and inter-Region data transfer may incur additional charges.

Getting started

1. Open the Amazon EventBridge website.
2. Choose the event bus or EventBridge Pipes approach for the event routing need.
3. Configure subscriptions with filtering, targets, and retry policies as needed.
4. Connect supported SaaS event sources or AWS service targets as needed.
5. Set up monitoring with CloudWatch metrics and choose a logging destination if needed.

Verdict

Choose Amazon EventBridge when an application needs managed event routing across AWS accounts, SaaS integrations, or AWS services. Its buses, Pipes, API destinations, and monitoring options support several event-routing patterns. Review payload-based billing and possible inter-Region transfer charges when estimating usage.