How are Event Grid operations counted?

An operation includes event ingress (publishing), event delivery attempts (including retries), and management calls. The first 100,000 operations per month are free. After that, pricing is approximately $0.60 per million operations. Failed delivery retries count as additional operations.

What is the difference between Event Grid and Event Hubs?

Event Grid is designed for reactive event-driven architectures with push delivery to subscribers at low latency. Event Hubs is a high-throughput streaming platform for time-series data ingestion. Use Event Grid for discrete events (resource created, blob uploaded) and Event Hubs for continuous data streams (telemetry, logs).

Does Event Grid guarantee delivery?

Event Grid provides at-least-once delivery with configurable retry policies. It retries delivery for up to 24 hours with exponential backoff. If delivery fails after all retries, events are either dead-lettered (if configured) or dropped. Subscribers should implement idempotent event handling.

Azure Event Grid Cost Estimator

ServerlessAzure

Estimate Azure Event Grid costs based on operations and event delivery.

Event Grid Configuration

Namespace Tier

Operations per Month

Total event publish and management operations. First 100,000/month are free.

Advanced Filtering Operations

Operations using advanced filtering ($0.09 per million). No free tier.

Event Delivery Attempts

Each delivery attempt counts as an operation toward the operations total.

Dead Letter Storage (GB)

Blob storage for dead-lettered events at $0.02/GB/month.

Raw Output

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About This Tool

The Azure Event Grid Cost Estimator calculates monthly costs based on event operations volume. Event Grid pricing is straightforward with a per-million-operations charge, but understanding what counts as an operation and how event delivery retries factor in is important for accurate estimates. The tool covers both Event Grid topics and system events from Azure services.

When to Use This Tool

•Estimating monthly Event Grid costs for an event-driven microservice architecture processing millions of events.
•Comparing Event Grid costs against Azure Service Bus for lightweight pub/sub messaging scenarios.
•Calculating the cost impact of retry policies on total operations when subscribers experience failures.
•Budgeting for Event Grid as part of a serverless application combining Functions, Logic Apps, and event routing.

Frequently Asked Questions

How are Event Grid operations counted?: An operation includes event ingress (publishing), event delivery attempts (including retries), and management calls. The first 100,000 operations per month are free. After that, pricing is approximately $0.60 per million operations. Failed delivery retries count as additional operations.
What is the difference between Event Grid and Event Hubs?: Event Grid is designed for reactive event-driven architectures with push delivery to subscribers at low latency. Event Hubs is a high-throughput streaming platform for time-series data ingestion. Use Event Grid for discrete events (resource created, blob uploaded) and Event Hubs for continuous data streams (telemetry, logs).
Does Event Grid guarantee delivery?: Event Grid provides at-least-once delivery with configurable retry policies. It retries delivery for up to 24 hours with exponential backoff. If delivery fails after all retries, events are either dead-lettered (if configured) or dropped. Subscribers should implement idempotent event handling.

Related Learning Guides

Service Bus vs Event Grid vs Event Hubs24 min read
Cost Management Guide24 min read

Disclaimer: This tool runs entirely in your browser. No data is sent to our servers. Always verify outputs before using them in production. AWS, Azure, and GCP are trademarks of their respective owners.