This whitepaper discusses the role of Software as a Service (SaaS) in medical imaging, focusing on its evolution, benefits, and challenges. It outlines the advantages of True SaaS over other cloud models, particularly in enhancing healthcare efficiency, improving cybersecurity, and ensuring compliance with regulations. The document details the growing adoption of SaaS in the healthcare sector, addressing critical challenges such as cybersecurity threats and the need for effective data management. It explains various cloud deployment models, including True SaaS, hybrid cloud, and BYO cloud, and emphasizes the importance of understanding vendor offerings to make informed decisions. The paper also highlights key principles of True SaaS, such as immutable infrastructure, cloud elasticity, and multi-tenancy, which contribute to its effectiveness and security. Additionally, it addresses the significance of governance in maintaining service quality and compliance, underscoring the need for a centralized approach to security management. The conclusion reinforces the strategic benefits of adopting True SaaS in medical imaging.