If you are writing an app for Office 365, I’d love to hear how you are finding it? What are your overall impressions of the App Model? Are you finding that it can cater for most situations and was it easy to learn it?
I am looking at this as well. A future SPChat would be good to see the pros and cons. for on Prem as the app model can be used here. For example, I think there is a restriction for remote event receivers as per the PnP samples documentation “The solution is a provider-hosted app (remote event receivers are not supported with SharePoint-hosted apps)”. In which case what are we supposed to use?
Also, when sync or async calls are acceptable in from the App to SP