# Deployment **Status**: [Experimental][DocumentStatus] **type:** `deployment` **Description:** The software deployment. | Attribute | Type | Description | Examples | Requirement Level | |---|---|---|---|---| | `deployment.environment` | string | Name of the [deployment environment](https://wikipedia.org/wiki/Deployment_environment) (aka deployment tier). [1] | `staging`; `production` | Recommended | **[1]:** `deployment.environment` does not affect the uniqueness constraints defined through the `service.namespace`, `service.name` and `service.instance.id` resource attributes. This implies that resources carrying the following attribute combinations MUST be considered to be identifying the same service: * `service.name=frontend`, `deployment.environment=production` * `service.name=frontend`, `deployment.environment=staging`. [DocumentStatus]: https://github.com/open-telemetry/opentelemetry-specification/tree/v1.26.0/specification/document-status.md