# Environment

> [!WARNING]
> Display \& Video 360 API v3 has sunset. Use [v4](https://developers.google.com/display-video/api/reference/rest/v4) instead.

Possible environment targeting options.

| Enums ||
|---|---|
| `ENVIRONMENT_UNSPECIFIED` | Default value when environment is not specified in this version. This enum is a placeholder for default value and does not represent a real environment option. |
| `ENVIRONMENT_WEB_OPTIMIZED` | Target inventory displayed in browsers. This includes inventory that was designed for the device it was viewed on, such as mobile websites viewed on a mobile device. ENVIRONMENT_WEB_NOT_OPTIMIZED, if targeted, should be deleted prior to the deletion of this targeting option. |
| `ENVIRONMENT_WEB_NOT_OPTIMIZED` | Target inventory displayed in browsers. This includes inventory that was not designed for the device but viewed on it, such as websites optimized for desktop but viewed on a mobile device. ENVIRONMENT_WEB_OPTIMIZED should be targeted prior to the addition of this targeting option. |
| `ENVIRONMENT_APP` | Target inventory displayed in apps. |