The U.S. Army Combat Capabilities Development Command (DEVCOM) has issued a Request for Information (RFI) to gather insights from businesses on managing large, complex networks for defensive cybersecurity operations (DCO). The RFI seeks to understand the roles and interactions between Network Operations Centers (NOC) and Security Operations Centers (SOC), particularly concerning their structures, collaboration during incidents, and the potential integration of these functions. Companies are also asked to consider the role of managed service providers in this process. The document outlines the critical importance of specialized network management for effective DCO, emphasizing the need for continuous monitoring and rapid incident response. Interested parties are invited to submit a white paper focusing on specific queries related to NOC and SOC configurations, the handling of Indicators of Compromise (IoCs), and scalability strategies. Additionally, responses must include technology readiness levels and risk assessments for possible future collaborations with the Army. The RFI concludes with instructions for submission, underlining that responses will not lead to contracts but will inform future acquisition strategies.