The Outbreak Toolkit is specifically designed for epidemiologists and field investigators operating at the frontline of complex emergencies and in resource-limited settings. It provides a comprehensive, up-to-date toolkit for investigating both infectious disease outbreaks and non-infectious events and hazards. By offering standardized tools, the Toolkit addresses the critical need for data consistency and facilitates effective data sharing across teams, locations, and timeframes. It serves as an essential asset for public health professionals confronting the unique challenges of outbreak response in demanding environments.