I know that I can make a backup of each element that I have hosted in ArcGIS Online Organization, but I need to keep all the content that I have there without having to download one by one.
I don't believe there is a way to backup everything at one go yet. You can check ArcGIS Online Assistant though.
There is an Idea logged requesting this functionality: Backup manager for ArcGIS Online
Note: I have moved this Post to the ArcGIS Online group as GeoNet Help is not the place to post questions about the Esri platform. GeoNet Help is the place where you can learn how to use the GeoNet community platform. In future, you can search for the relevant GeoNet group to post your questions or other content.
Please have a look at the below link:
How To: Back up content in ArcGIS Onlinehttp://support.esri.com/Technical-Article/000011795
Thanks by your soon answer.
In that page explains the procedure about make an individual copies, and I'm searching for the way to make a massive copy, due to I have a lot of content in the Organization and the individual backup is something tedious.
Unfortunately, there is no way to backup all the content in one step.
Retrieving data ...