Configures Google Cloud Storage as the backend for storing uploaded file attachments.

###### Prerequisites

1. Open the Google Cloud Console — Cloud Storage.
2. Create a bucket (or use an existing one) in the desired region and note its name.
3. In IAM → Service Accounts, create a service account.
4. Grant the service account the Storage Object Admin role on the target bucket (or project-wide).
5. Create a JSON key for the service account and download it.
6. Paste the JSON key content into the Credentials field below.

###### Settings

Credentials
  The full contents of a Google service account JSON key file. Stored encrypted at rest.
Bucket
  The name of the GCS bucket where attachments will be stored (e.g. `my-app-attachments` ).

After configuring GCS, select Google Cloud Storage as the active provider in the File Configuration to start routing uploads to GCS.
Open Google Cloud Storage