WhatsApp Business

"To enable Ads That Click to WhatsApp, we share the following information with Meta: Business Account Information to create Ads That Click to WhatsApp... For Meta AI through WhatsApp we share the following information with Meta: Device and Connection Information (e.g., technical identifiers, region and language) to support the correct operation of Meta AI."

WhatsApp shares device identifiers and business account information across Meta's ecosystem for advertising and AI features, enabling cross-service tracking and profile linking.