The Social Innovation Fund (SIF) is one of six federal tiered innovation and evidence initiatives that prioritizes evaluation and building evidence of effectiveness. The focus on evidence in SIF goes beyond confirming that the funded programs achieved their intended outcomes and impacts; it includes understanding how they are successful and how they can be improved. By developing a strong evaluation process, putting resources towards supporting quality evaluations and encouraging our grantmaker intermediaries and subgrantees to do the same, the SIF increases the evaluation capacity of all stakeholders and transparently offers best practices and lessons learned to the broader social sector.