Hi @Joe Mezzo ,
To deploy from DEV to production in SharePoint Online, you can use the SharePoint Add-In model. You can create and test your add-in in a SharePoint Online website in an Office 365 subscription or an on-premises, one-server SharePoint farm. Once you have tested and debugged your add-in, you can deploy it to either SharePoint Online or to on-premises SharePoint farms.
References:Tools and environments for developing SharePoint Add-ins
Note:SharePoint Add-Ins will stop working for new tenants as of November 1st, 2024 and they will stop working for existing tenants and will be fully retired as of April 2nd, 2026. This applies to all environments including Government Clouds and Department of Defense.
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