Integrated Outbreak Analytics (IOA) applies a multidisciplinary approach to understanding outbreak dynamics and to inform outbreak response. It aims to drive comprehensive, accountable, and effective public health and clinical strategies by enabling communities, and national and subnational health authorities to use data for operational decision-making. IOA embraces a holistic perspective of outbreak dynamics throughout: from the trigger questions to the data that are collected or accessed, to the interpretation of results and the recommendations that follow. In addition, IOA promotes co-development and monitoring of evidence informed actions. The IOA toolkit aims to provide a clear understanding of IOA and highlight the importance of using an integrated, holistic approach to manage outbreak responses. It provides step-by-step guidance for setting up IOA and putting IOA principles into action. Finally, this toolkit provides guidance on applying IOA in humanitarian and emergency contexts, offering a practical and adaptable approach to informing public health emergency responses. Developed based on the model from the Democratic Republic of the Congo (DRC), its creation involved extensive consultation with experts experienced in IOA applications. The toolkit was piloted in Tanganyika Province, DRC, as well as Somalia and Sudan, demonstrating its adaptability to diverse emergency scenarios. It builds upon an existing array of tools, templates, reports, case studies, animations, and publications used by stakeholders in diverse contexts.