Multi-Tenant SaaS Architecture for HIPAA + SOC 2: The Isolation Model That Scales

CC6.3

SOC 2 common criterion requiring logical access controls that prevent unauthorised access across tenant boundaries

Multi-tenant SaaS serving regulated industries must choose a tenancy isolation model that satisfies PHI isolation under HIPAA and logical access separation under SOC 2 CC6.3. Shared schema architectures are cheaper to operate but create cross-tenant data exposure risk that is difficult to audit. Schema-per-tenant and database-per-tenant approaches scale differently and have distinct implications for BAA coverage, encryption key scope, and breach notification obligations. Most teams pick based on operational cost and discover the compliance consequences at certification time.

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Multi-Tenant SaaS Architecture for HIPAA + SOC 2: The Isolation Model That Scales

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