The Radisys webinar on September 6, 2018, focused on the evolution of the Open Network Automation Platform (ONAP) and its role in enhancing NFV (Network Functions Virtualization) capabilities for service providers. Key topics included the importance of orchestrating media server services, challenges in telco cloud transformation, and the need for a cloud-native ecosystem to accelerate service delivery. The discussion emphasized real-world use cases, onap's integration with various operational components, and its potential to improve customer experience and operational efficiency.