MDR (Managed Detection and Response) services are increasingly valuable for organizations that need robust security monitoring and response capabilities, but may not have the resources or expertise to manage an in-house Security Operations Center (SOC). MDR service providers play a crucial role in the cybersecurity ecosystem by outsourcing critical SecOps functions to enhance cybersecurity without added complexity and management overhead. However, even sophisticated MDR service providers face significant challenges with threat detection due to growing sophistication of cyber threats, complexity and fragmentation of modern IT environments, shortcomings of common tools in the MDR security stack, and massive volume of data that must be analyzed. Key challenges include complex cyber threats, tool fragmentation, IT infrastructure fragmentation, data fragmentation, scalability issues, and compliance requirements. To overcome these challenges, MDRs need to adopt a centralized data-first approach with cost-effective long-term storage and analytics capabilities.