What is Eventarc?
Eventarc is Google’s service for event-driven architectures on Google Cloud. The service enables reacting to changes in cloud resources and automatically triggering actions, without having to operate the underlying delivery, security, and error-handling infrastructure yourself. For example, when a file is uploaded to Cloud Storage, Eventarc can automatically start a Cloud Function for processing. Eventarc is now available in two editions: Eventarc Standard for simple, decoupled microservices, and Eventarc Advanced for more complex eventing architectures with multiple sources, transformations, and external targets.
Core Features
- Declarative trigger definition for numerous GCP event sources
- Routing to Cloud Run, Cloud Functions, and GKE (Eventarc Advanced also to external HTTP targets)
- CloudEvents standard for interoperable event formats
- Audit log-based triggers for GCP services
- Central event bus with filtering and transformation (Eventarc Advanced)
- Retry logic and dead-letter queues
Typical Use Cases
File Processing: Automatic processing of files upon upload to Cloud Storage. For example, image conversion, virus scanning, or metadata extraction.
Database Reactions: Triggers on changes in Cloud SQL or Firestore. Synchronization with other systems or validation of data after writing.
Infrastructure Automation: Reaction to audit log events such as resource creation. Automatic configuration, tagging, or compliance checks.
Complex Microservice Landscapes: With Eventarc Advanced, events from multiple sources (including Kafka or third-party messaging) can be aggregated, transformed, and distributed to various, including external, destinations.
Benefits
- No polling logic required
- Loose coupling between systems
- Scales automatically with event volume
- Standardized CloudEvents format
- Migration path from Standard to Advanced as complexity grows
Integration with innFactory
As a certified Google Cloud partner, innFactory supports you with Eventarc: design of event-driven architectures, choosing between Standard and Advanced, implementation of event pipelines, and integration into existing systems.
Available Tiers & Options
Eventarc Standard
- Fully managed
- CloudEvents standard
- Native GCP integration
- Simple setup for decoupled microservices
- Limited event transformation
- No direct delivery to external HTTP targets
Eventarc Advanced
- Routing via a central event bus from multiple sources and to multiple destinations
- Event transformation and enrichment pipelines
- Delivery to external HTTP endpoints
- More complex to configure
- Separate pricing model in addition to Standard
Typical Use Cases
Technical Specifications
Frequently Asked Questions
What is the difference between Eventarc and Pub/Sub?
Pub/Sub is a message broker for arbitrary messages. Eventarc is an event router that forwards events according to the CloudEvents standard to targets. Eventarc Standard uses Pub/Sub internally as a transport layer but offers declarative trigger configuration.
What is the difference between Eventarc Standard and Eventarc Advanced?
Eventarc Standard is suited for simple, decoupled microservices within Google Cloud. Eventarc Advanced provides a central event bus with routing from multiple sources, event transformation, and delivery to external HTTP endpoints for more complex architectures.
Which targets can Eventarc address?
Eventarc can route events to Cloud Run, Cloud Functions, GKE workloads, and Workflows. Eventarc Advanced can additionally address external HTTP endpoints. Targets must be able to accept HTTP requests.
How is Eventarc billed?
Eventarc Standard includes a free monthly quota, after which costs depend on event source and volume, plus costs for the Pub/Sub transport layer and the target services used. Eventarc Advanced is billed based on bus publishing, pipeline messages, and transformations.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of Google Cloud (official documentation). This page does not represent an offer by Google Cloud.
