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title: Deployment sidebar_position: 7

Deployment

Once an extension has been developed, the deployment process involves packaging and uploading it to the host application.

Packaging is handled by the superset-extensions bundle command, which:

1. Builds frontend assets using Webpack (with Module Federation configuration).
2. Collects backend Python source files and all necessary resources.
3. Generates a manifest.json with build-time metadata, including the contents of extension.json and references to built assets.
4. Packages everything into a .supx file (a zip archive with a specific structure required by Superset).

To deploy an extension, place the .supx file in the extensions directory configured via EXTENSIONS_PATH in your superset_config.py:

EXTENSIONS_PATH = "/path/to/extensions"

During application startup, Superset automatically discovers and loads all .supx files from this directory:

1. Scans the configured directory for .supx files.
2. Validates each file is a properly formatted zip archive.
3. Extracts and validates the extension manifest and metadata.
4. Loads the extension, making it available for use.

This file-based approach simplifies deployment in containerized environments and enables version control of extensions alongside infrastructure configuration.