When the system is in Production, that means all the relevant business processes and functions have been configured and the required data loaded.  The system is now ready for use in a live environment.

Before you go-live, Production will generally not be available or ready, or lag behind Development at best, from a technical, data and / or functional perspective.

Best regards,

km

But I want to know if there is difference between Odoo in developpement and Production.