The Open Paradigm: A Systematic Analysis of Evolutionary Frameworks and Cross-Sectoral Applications in Data-Driven Ecosystems

The concept of open has gained increasing prominence in the financial and insurance sectors, with Open Banking, Open Finance, and Open Insurance driving transformative shifts in service provision and data-sharing practices. This systematic literature review conceptualizes and defines the open paradigm by examining its evolutionary development and implementation across diverse global contexts. Through rigorous analysis of 274 studies, we identify five foundational pillars that characterize open models: inclusion, interoperability, innovation, security, and consumer empowerment. The study traces the evolutionary progression from Open Banking to Open Finance to Open Insurance, demonstrating how each model expands in scope while building upon shared principles. Our comparative analysis reveals significant regional variations in implementation approaches, with developed markets emphasizing competition and service enhancement, while emerging economies like Brazil adapt open principles to address financial inclusion challenges. The findings highlight how standardized interfaces, particularly APIs, facilitate secure data exchange, while regulatory frameworks balance innovation with consumer protection. Beyond financial services, we demonstrate how open principles are being successfully adapted across healthcare, education, government, energy, and agriculture sectors, suggesting a broader paradigm shift in how data, services, and stakeholders interact within digital ecosystems. The review concludes that open models hold significant potential for creating more sustainable, inclusive, and customer-centric ecosystems that reduce access barriers, enhance service efficiency, and stimulate cross-sector innovation. However, realizing this potential requires sustained regulatory alignment, robust technological infrastructure, appropriate governance mechanisms, and active stakeholder collaboration to ensure that openness delivers meaningful benefits to all.