@JohnSebastian-3934 Thank you for reaching out to us, As I understand you have query on Adaptive Application Control feature which is depreciated from Microsoft Defender for Cloud and how this feature being replaced with, on researching on the same and checking a couple of cases internally with similar query below is the response.
its functionalities will be replaced by new capabilities under the Microsoft Defender for Endpoint integration and agentless machine scanning, this will streamline security features and enhance protection without relying on the older Log Analytics agent. The new approach will provide similar security recommendations and controls, but with improved efficiency and coverage across various environments.
Also, navigate to the Defender for Servers and Defender for Servers Pan 2 features' plan sections of the article below explaining that most of the features are available through the MDE extension and Agentless scanning - https://learn.microsoft.com/en-us/azure/defender-for-cloud/plan-defender-for-servers-select-plan
Let me know if you have any further questions, feel free to post back.
Please remember to "Accept Answer" if answer helped, so that others in the community facing similar issues can easily find the solution.