Migrate Provided Hosted App to SharePoint Online

Hi Team,

I have a Provided Hosted App which is combination of SharePoint App and MVC WebApplication.

Currently it is hosted in Non-SharePoint server but deployed on SharePoint 2013 OnPrem.

I would like to keep this application on same server but wanted to deploy the app in SharePoint Online.

Now app launching should happen from online, but functionality should be same.

Could you please suggest standard practice steps.

Thanks,

Sandeep