The white paper "Accelerating the ATO: A Declarative & Open-Source Approach" outlines how Open-Source Declarative Packages (OSDPs), aligned with NIST 800.53, can streamline the Department of Defense's (DoD) Authorization To Operate (ATO) process. The current Risk Management Framework (RMF) process, critical for securing DoD information systems, presents significant challenges for the System Owners such as delays, inconsistent implementation, and extensive documentation requirements. The study highlights how the role of the Open Security Controls Assessment Language (OSCAL) can support automation and standardization in the ATO process. Interviews with over 50 ATO participants revealed common issues like inadequate training, lack of clarity, and insufficient resources, all of which hinder the RMF's effectiveness.

• Reduced Cost, Time, and Improved Collaboration: Through NIST aligned automation, OSDPs decrease documentation burdens, save resources, expedite solutions, and foster better collaboration between industry and DoD.
• Enhanced Security and Consistency: Open-source scrutiny improves security standards and transparency, while standardized controls across departments reduce inconsistencies in the RMF process.
• Risk Mitigation Focus with OSCAL: OSDPs help prioritize actual security risks over compliance, and OSCAL supports automation, enhancing efficiency and accuracy in the ATO process.

These elements collectively suggest that adopting OSDPs could lead to quicker ATO approvals, stronger defense posture, and more secure system deployments across the DoD.