I recently discovered SharePoint and the applications hosted by vendors. Based on videos and tutorials, I found that most of them owned a site with a SPHostURL. I was able to recreate that too.
Then heard the display of several applications in an iframe. (See picture)
When you click a hyperlink to the application, it appears in the Iframe. The right side contains the SharePoint calendar or other lists of clients with which the application hosted by the provider can communicate, for example. selection of dates, search of contact details, notes.
For example, if an application is a project tracker, the definition of a deadline in the application appears in the SharePoint calendar.
Is this method easily possible and effective?
What is the best approach for the applications hosted by the provider?