---
source_url: "https://docs.withorb.com/overview"
title: Overview - Orb
mirrored_at: 2026-08-22T13:03:47.160Z
host: docs.withorb.com
cited_in_42a: true
mirror_canonical: "https://index.42a.ai/docs.withorb.com/overview"
---

> **Original source:** https://docs.withorb.com/overview

Orb handles usage-based, seat-based, and hybrid billing. From simple subscriptions to complex enterprise contracts, test pricing changes before deploying, backdate amendments without manual fixes, and process millions of events per second. Built on our query-based architecture for flexibility and scale.

## Any pricing model

## Learning paths

## Key features

-   **[Simulations](https://docs.withorb.com/simulations/introduction)** - Test pricing changes against historical usage before deploying.
-   **[Backfills & corrections](https://docs.withorb.com/architecture/query-based-billing)** - Late data handled safely. Orb recalculates affected invoices automatically.
-   **[Hosted rollups](https://docs.withorb.com/events-and-metrics/high-throughput-ingestion)** - Handle 1M+ billing events per second in production deployments.
-   **[Real-time visibility](https://docs.withorb.com/product-catalog/usage-visibility)** - Track accrued revenue before invoices. Forecast and spot expansion.
-   **[Custom SQL metrics](https://docs.withorb.com/events-and-metrics/construct-metrics)** - Build complex billing metrics with full SQL control.
-   **[Usage alerting](https://docs.withorb.com/usage-alerting/overview)** - Trigger alerts at usage thresholds to power product-led growth.
-   **[Revenue recognition](https://docs.withorb.com/revenue-reporting/revenue-recognition)** - Track recognized and deferred revenue with exports for financial systems.

## Resources