Admin UI SDK will be using the Adobe Admin IMS to connect with App Registry securely where your application is registered. On a local instance, the mock server will be used. In a cloud instance this connection is done by enabling the Adobe Admin IMS module in commerce, linking it correctly to your o...

Adobe I/O Event is the configuration for events and not linked to Admin UI SDK.

Admin UI SDK, as you said, allows the customization of the Adobe Commerce Admin Panel through extension points registered in the App Builder application. For local testing, when the application is running locally, the commerce instance should be running locally and a local server should be up and ru...

Hello, Happy to help on this.Can you please give more context on what you're trying to achieve with this? Where will these menu items be displayed or fetched?  Can you also please share some details on how menu items are registered in your app builder application? Quick note: App builder registratio...