If so, what is the fastest way to do that?
Would you be able to further explain what you are looking to do? This depends on whether or not you're using the automation tools within PlayFab or using an external program, tool, or service to make HTTP requests to PlayFab.
If you're using tools like Cloudscript and internal PlayFab automation tools this will not work but it is possible from an external program or tool. All you would need are the secret keys for the Titles you wish to act upon.
So, after playing with Playfab scripts I managed to run script from one title, that logs to other titles and does any REST command that is available from Playfab SDK.
But I am doing it using HTTP tools, meaning sending rest commands.
fortunately it is all located on same or close servers so it is fairly quick.
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