---
title: Charmhub |  interface
description: Interfaces describe the relation between two charms. This interface shows
  opinionated, standardized interface specifications for charm relations.
url: https://charmhub.io/integrations/event-service
---

#

## Other charms using this interface

### Providers

### Requirers

* [ceilometer](https://charmhub.io/ceilometer)