An addon wraps up a Python application (such as django CMS, Django Filer or even Django itself) so that it can be added to a Divio project via the web interface on our Control Panel.

If you were to install an application by hand, say using pip install ... , you would then need to wire it up into a project, ensuring that it is correctly configured and has appropriate settings.

An addon can take care of all this for you, even ensuring (just for example) that MIDDLEWARE options it requires are inserted in the correct order, and that its URL configurations are correctly added to the project.

Settings can also be exposed to the user in a simple form on the Control Panel.

Packaging a Python application as an addon allows users to add it to their project even without having the technical knowledge that would otherwise be required to do so, and allowing them to update it to newer versions easily when they become available.

For more details, see the Working with Addons section, in our Developer Handbook.

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