Digital health innovations often struggle to scale beyond pilot stages due to a lack of understanding regarding the evidence needed to convince decision-makers to adopt them sustainably.

This paper, based on interviews with decision-makers engaged in digital health innovations in Scotland, presents a heuristic service readiness level (SRL) framework to capture the evolving evidence needed for scaling digital health innovation projects.

By analysing what evidence is required and how data accumulates over time, this framework assists project teams in building a compelling case for scaling digital health innovations.