Does running multi-cloud double our compliance work?

Practitioners often underestimate the granular differences in control implementation and evidence collection across distinct cloud providers, even for seemingly identical services. For SOC 2, each cloud platform's specific configuration, access controls, and operational processes must be mapped against the Trust Services Criteria. For FedRAMP, each Cloud Service Offering (CSO) within each cloud provider must be assessed against the NIST SP 800-53 controls, and the shared responsibility matrix will differ significantly. This necessitates separate documentation, distinct audit trails, and potentially different tooling for monitoring and reporting across each cloud, rather than a simple duplication of effort. The challenge lies in harmonising these disparate control sets and evidence types into a cohesive compliance posture.

A common misconception is that a single set of organisational policies and procedures automatically satisfies compliance requirements across all cloud providers. While overarching governance is crucial, the technical implementation and operational evidence for controls like vulnerability management, incident response, or data encryption will vary significantly between AWS, Azure, GCP, or other platforms. Organisations often fail to account for the overhead of managing multiple shared responsibility models, each with its own specific boundaries and customer responsibilities. This leads to gaps in control coverage, increased audit findings, and a disproportionate increase in effort during evidence gathering and auditor interaction, far exceeding a simple doubling of work. Effective multi-cloud compliance requires a robust control rationalisation strategy and dedicated resources for each distinct cloud environment.