Explore the complexities of incident response across organizational boundaries in this 37-minute conference talk from SREcon23 Europe/Middle East/Africa. Delve into the challenges and insights of managing vendor relationships in modern software systems as companies increasingly rely on third-party external vendors for critical services. Learn about the "Multi-Party Dilemma" concept, drawing from research and real-world experiences across three different companies. Gain valuable knowledge on navigating incidents involving multiple parties, including cloud providers, CDN and Edge vendors, and DDoS protection services. Discover strategies for effective incident management and collaboration in today's interconnected business landscape.