In the context of Yemen, where data collection and analysis processes face extensive barriers, REACH has identified humanitarian coordination actors – primarily the Cluster system – as the most effective means to build capacity and unblock administrative barriers to these processes. By working within the Cluster system, REACH is able to directly liaise with dozens of NNGO, INGO, and UN partners to enhance and harmonize data collection, analysis, and utilization processes, in line with Goal 5 of the Grand Bargain. In working with a wide variety of partners within a recognized coordination structure, REACH ensures a broad impact across the humanitarian response, building the capacity of partners to collect and utilize data. In addition, enhancing the capacity of coordination partners to facilitate data collection and analysis creates a higher level of buy-in from Cluster and Working Group partners, ensuring increased levels of collaboration. In this way, REACH seeks to achieve long-term, sustainable change within the Yemen humanitarian system, and ensure robust, evidence-based planning at all levels of the response.