White Paper: Clarifying Cloud Foundations PaaS vs. IaaS for Federal Modernization

ATARC cATO Working Group | February 2026 

 

This paper provides a clear and practical guide for federal stakeholders to distinguish Infrastructure-as-a-Service (IaaS) from Platform-as-a-Service (PaaS), evaluate trade-offs, and implement the right model for secure, sustainable modernization. Understanding these models is essential to aligning technology decisions with mission outcomes, risk tolerance, and workforce realities.