@germanroncelli , Have you licensed an application natively-built on Platform like Real-time CDP, Journey Optimizer, or Customer Journey Analytics? Features like schemas and identities are available to all Experience Cloud customers because they are required to implement non-Platform applications li...

Disclaimer: I haven't set this up yet.   After reading the later sections of the documentation, it looks like the "Integration alias" is for you to put an arbitrary value to help you to identify the system you are integrating with. For example, if your personalization system is Optimizely, you might...

What a great idea! Please let me know if you realize we are missing enablement resources on Experience League (e.g. tutorials, videos) that are important for your group to master Platform!

Yes, there is a UI limitation right now in that the tags interface only shows the identity namespaces from the Prod sandbox. If you are able to duplicate the same namespace in your Prod sandbox it will then appear and you can select it and use it with requests made to your dev sandbox.