Data-Driven Implementation Trials: Realizing Their Full Potential in Achieving the Promise of Learning Health Systems.

The digital transformation of healthcare has generated unprecedented volumes of routine clinical data, enabling health system leaders, including quality improvement (QI) efforts, to optimize care using real-time analytics. However, health system QI typically focuses on changes within localized environments; it is often limited in its ability to address systemic barriers or scale evidence-based strategies across diverse settings. Thoughtful integration of implementation science (IS) approaches addresses this gap by systematically integrating interventions into diverse practice settings and defining generalizable implementation strategies. These attributes position IS as a cornerstone of learning health systems (LHS), which strive for population-wide improvements through continuous, data-driven learning. Within this paradigm, randomized implementation trials provide the gold standard for comparing and optimizing implementation strategies. By leveraging routine data, these trials generate causal evidence on the effectiveness of different approaches and offer rigorous insights for health system decision-makers. In this viewpoint, we highlight data-driven implementation trials as catalysts for rigorous and scalable health system transformation. Specifically, we articulate the value proposition of data-driven implementation trials, examine their transformative potential toward learning health systems, and outline persistent challenges. Drawing on experiences from the UK and the US in large health systems, we propose actionable recommendations to optimize infrastructure, foster collaboration, secure health system-level commitments, and cultivate a culture that is grounded in IS while augmenting the impact of QI-critical steps toward realizing scalable, equitable healthcare innovation.