Office 365

If you want to deploy the Office add-in centrally to all or a certain subset for your users, there are two options. If required by the guide, please use this AppSource listing: Office Add-in in AppSource

Via Office 365 admin center

Please check this guide in the official Microsoft documentation on how to do this.

Via centralized deployment Powershell commands

If you prefer to use powershell commands, you can use this guide.