Content Migration item types, and comparison of .epk (Rest API) vs API for Python

Question

I'm trying to understand the different item types supported for these 2 APIs,

Cloning Content | ArcGIS API for Python | Esri Developer

Cloning via Offline Backups | ArcGIS API for Python | Esri Developer

Are both supporting the same file types to be migrated? For the offline backups, is there limitations in terms of number of items and backup size?

For the offline API, is it fundamentally different than the REST API? When should the Python vs the REST API version be used?

/export: Export Group Content | ArcGIS REST APIs | Esri Developer

Many thanks for sharing..

JackDrost · Answer

Thanks!  Renaming it to ".ZIP" actually did not work for me but I made a wild guess and tried renaming it to ".7z" and that worked.  I can now open the folder and see the .json files, folders, etc.

PeterKnoop · Answer

@JackDrost it is a zip file. If you manually open it in something like 7-Zip, then it will figure it out. Otherwise, you can always replace the suffix ".contentexport" with ".zip", and use your favorite method for zip files.

JackDrost · Answer

Is there any way to open / read a ".contentexport" file, apart from using the ArcGIS API for Python?