Camunda is an open source workflow and business process management platform that uses BPMN, CMMN, and DMN standards to provide workflow automation, case management, and decision automation capabilities. It provides a lightweight workflow engine, developer tools, and visibility into processes. Camunda has been adopted by over 100 customers across various industries for applications like application processing, claims management, and order fulfillment. It aims to provide better process agility and flexibility through a dedicated workflow layer compared to monolithic enterprise systems.