In highly regulated professional markets such as healthcare, finance, and legal services, brand differentiation remains an enduring challenge due to strict compliance standards, homogeneous service offerings, and limited creative flexibility. This review examines data-driven brand positioning frameworks that leverage analytics, behavioral insights, and machine learning to achieve meaningful differentiation within these constrained environments. The study synthesizes recent literature and industry case studies to explore how organizations can utilize structured data—such as client sentiment, digital engagement patterns, and competitive intelligence—to refine brand narratives, strengthen trust, and align value propositions with both regulatory expectations and client expectations. Particular attention is given to frameworks that combine predictive analytics with reputation modeling to optimize brand communication strategies while maintaining ethical integrity and compliance. The paper also evaluates visualization and decision-support tools (e.g., Power BI, Tableau) that transform brand metrics into actionable insights for executives. Finally, it proposes an integrative data-driven brand positioning model that addresses both strategic and operational dimensions of differentiation. This model emphasizes continuous feedback loops, sentiment mapping, and compliance-aligned storytelling as essential components for sustained brand equity in regulated markets. The findings highlight how organizations can move from static brand identities toward dynamic, evidence-based positioning strategies that evolve with data and regulatory changes.