Hi Anita Okoro,
No, the Azure Information Protection (AIP) add-in for Microsoft Defender no longer exists. It has been retired and replaced by built-in labeling capabilities within Microsoft 365 apps and service
Recommended - Microsoft Purview Information Protection for unified label management and Microsoft Defender for Cloud Apps for cloud-based data protection and policy enforcement.
Refer: Retirement notification for the Azure Information Protection Unified Labeling add-in for Office
Also, take a look at this question I came across during my research—it’s quite similar to yours.
Azure Information Protection retiring in April 2024
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