CAIQ (Consensus Assessments Initiative Questionnaire)
CAIQ is a cloud security questionnaire developed by the Cloud Security Alliance (CSA) to evaluate cloud service providers against the CSA Cloud Controls Matrix.
Definition
The Consensus Assessments Initiative Questionnaire (CAIQ) is a standardized self-assessment questionnaire developed by the Cloud Security Alliance (CSA). It evaluates cloud service providers against the CSA Cloud Controls Matrix (CCM) covering 17 security domains with over 260 questions.
Context
CAIQ is commonly required when selling cloud services to enterprises, particularly in regulated industries. It covers domains including application and interface security, audit assurance, business continuity, change control, data security, encryption, governance, identity and access management, infrastructure security, interoperability, mobile security, security incident management, supply chain management, and threat and vulnerability management. Completing a CAIQ and registering on the CSA STAR registry demonstrates cloud security maturity to potential buyers.
Why it matters
The Consensus Assessments Initiative Questionnaire, published by the Cloud Security Alliance, is a security assessment specifically designed for cloud service providers. It maps directly to the CSA Cloud Controls Matrix and covers domains such as identity management, data security, supply chain transparency, and audit assurance. CAIQ is widely used in cloud procurement because it addresses shared responsibility model nuances that generic questionnaires often miss. Vendors who proactively complete a CAIQ and publish it on the CSA STAR Registry signal maturity to prospective buyers.
One common pitfall is treating CAIQ responses as purely a compliance checkbox without engaging the engineering teams who actually implement cloud controls. Answers drafted solely by GRC staff may not reflect the real architecture — container orchestration details, encryption key management, or multi-tenancy isolation mechanisms. Cross-functional review between security, DevOps, and infrastructure teams produces accurate responses. Additionally, organizations often neglect to update their CAIQ when they migrate between cloud providers or adopt new services, creating stale assessments.
The CAIQ has become increasingly relevant as enterprises adopt multi-cloud and hybrid architectures. CSA updates the questionnaire alongside the Cloud Controls Matrix, most recently aligning with version four, which introduced new domains for interoperability and universal endpoint management. Organizations evaluating SaaS vendors should request a current CAIQ alongside SOC 2 reports for comprehensive cloud-specific risk visibility. The STAR Registry's tiered self-assessment and third-party audit levels help buyers quickly gauge the depth of a vendor's cloud security validation.