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Vital Signs

Perspectives on Healthcare IT, clinical informatics, emerging technology, and life at the intersection of nursing and enterprise systems.

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October 23, 2026 · Certification Prep, Healthcare IT, HIMSS Word of The Day, IT Infrastructure

HIMSS Word of the Day #151: Software as a Service (SaaS)

Software as a service (SaaS) is software delivered over the internet and managed by a vendor, typically on a subscription basis. This post explains how SaaS differs from infrastructure and platform services, why healthcare organizations adopt it, the shared responsibility model for security and HIPAA, vendor and concentration risk, and what SaaS means for clinical workflows and nurses.

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