Thank you for reaching out to us. As I understand you are looking for scenarios where MCAS & MIP can be used in terms of labelling.
Note: We've renamed Microsoft Cloud App Security. It's now called Microsoft Defender for Cloud Apps
I have few scenarios which I can share it with you.
Reference article: https://techcommunity.microsoft.com/t5/security-compliance-and-identity/mcas-data-protection-blog-series-do-i-use-mcas-or-mip/ba-p/2011039
More information related to MIP & Defender for cloud apps integration can be found here https://learn.microsoft.com/en-us/defender-cloud-apps/azip-integration
Also would like to share this document/link - aka.ms/aipdag which has useful information that helps during the deployment of AIP.
Let me know if you have any further questions.
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