> You are reading the Docusign Developer Documentation. For clean Markdown of any page, append .md to the page URL.
>
> Documentation indexes by section:
> - APIs and SDKs: https://docusign.docs.buildwithfern.com/docs/llms.txt
> - Platform 101: https://docusign.docs.buildwithfern.com/platform/llms.txt
> - Extension Apps: https://docusign.docs.buildwithfern.com/extension-apps/llms.txt
> - Docusign CLI: https://docusign.docs.buildwithfern.com/docusign-cli/llms.txt
>
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>
> OpenAPI specifications: https://docusign.docs.buildwithfern.com/openapi.json
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# File output cloud storage extension app reference implementation

This reference implementation simulates an external service that writes files to cloud storage. It stores files locally or with the cloud provider of choice (AWS, Azure, or GCP).

[Learn More](http://github.com/docusign/extension-app-file-output-cloud-storage-reference-implementation)