This paper explores ways in which IRISS (Institute for Research and Innovation in Social Services) promotes the delivery of cost effective social services in Scotland that support the achievement of positive outcomes. The approach to evidence-informed practice is characterised as four pillars of activity. The first focuses on improving awareness and access to evidence. The second refers to strengthening the evidence base and is discussed in the context of work on self-directed support. Improving skills and confidence to use evidence forms the third pillar. The final pillar is embedding evidence in organisations, through coproduction, creating spaces to test and challenge evidence, and through the development of evidence-based products.