This paper provides an overview of DFID’s work to build the evidence base and catalyze innovation in the humanitarian sector. In addition to a summary and introduction, it comprises three parts. Section 2 sets out the aims and objectives of the strategy, locating it within the wider context of DFID’s humanitarian policy. Section 3 identifies the four big problems around which we are concentrating our efforts. Section 4 describes how DFID’s interest in this area is delivered.