Data security in AI deployment operates at multiple layers. At the infrastructure level, we enforce role-based identity and access management, encrypted data-in-transit and at-rest, and network segmentation between model serving environments. At the model level, we implement model access governance controlling which systems and users can invoke which models, with full audit logging of inference requests. For regulated environments (financial services, healthcare, government), we design deployment architectures that satisfy data residency requirements and support compliance frameworks including SOC 2, HIPAA, GDPR, and ISO 27001. and UAE PDPL. Edge AI deployments receive additional security hardening for on-device execution in field environments.