How can we use Marketing Cloud Engagement+?

Hi Hello 

In addition to our current contract for Marketing Cloud Engagement, we have decided to add Marketing Cloud Engagement+ to our contract.

The main purpose of this additional contract is to utilize AI to build segments using natural language, such as specifying conditions with generative AI.

In order to establish this operation, we would like to organize the future data design and processing flow. From an architectural perspective, could you please advise us on the following three points regarding what preparations and tasks will be required based on our current configuration?

Questions

1. Data management location 
   Currently, the customer data used for message delivery is managed on the Marketing Cloud (MC) side. In order to use AI-powered natural language segmentation, is it necessary to migrate or consolidate this data into Data Cloud (DC)? Or is it acceptable to continue managing the data in MC as it is now?

2. Environment for creating AI segments 
   Specifically, in which environment or screen will AI-powered natural language segment creation be performed: MC or DC?

3. Environment for executing message delivery 
   When using the extracted and segmented data, will the actual message delivery, such as email or LINE, be executed from MC? Or will it be triggered directly from DC?

Thank you for your support.