Security Questions to Ask Cloud Providers

When evaluating cloud providers, asking the right security questions up front reduces risk, supports compliance, and clarifies responsibilities. This evergreen checklist focuses on shared responsibility, data protection, identity and access management, logging and monitoring, incident response, and contractual safeguards. Use these security questions to compare providers, inform procurement decisions, and validate existing cloud environments.

Shared Responsibility and Service Models

Understand how security is divided between you and the provider, because responsibilities vary by service model. Infrastructure services place more security burden on you, while platform services shift more controls to the provider. Clarify these boundaries early to avoid gaps in ownership.

What security responsibilities does the provider manage versus the customer for each service model (infrastructure, platform, software)?

• Request a detailed shared responsibility matrix that maps controls to the service type.
• Ask how configurations, guest OS, and application code are expected to be secured on your side.

How do you document and communicate changes to the shared responsibility model when features or services are updated?

• Check whether change notifications are proactive and tied to your architecture review cadence.

Compliance, Certifications, and Audits

Compliance attestations provide third-party validation of controls. Confirm that the provider's certifications align with your regulatory obligations and risk appetite.

Which compliance frameworks and certifications do you maintain (e.g., ISO 27001, SOC 2, PCI DSS, HIPAA, GDPR), and are audit reports available for review?

• Request recent audit reports and any findings or exceptions that remain open.

How are data residency and sovereignty requirements enforced, and can you support region-specific compliance constraints?

• Verify data location controls, encryption key residency, and data transfer mechanisms for cross-border flows.

Data Protection and Encryption

Encryption safeguards data at rest and in transit, while key management determines who can access that data. Understand the technical and operational controls around cryptographic lifecycle management.

What encryption standards are used at rest and in transit, and which algorithms and key lengths are supported by default?

• Look for AES-256 at rest and TLS 1.2+ in transit, with forward secrecy where applicable.

How are encryption keys managed: does the provider manage keys, do you bring your own keys (BYOK), or use customer-managed keys (CMK) with a hardware security module (HSM)?

• Clarify separation of duties, key rotation policies, and escrow procedures for recovery.

Can you provide evidence of encryption implementation and key isolation through architecture reviews or third-party assessments?

• Request configuration benchmarks, HSM certifications, and results of cryptographic module validation (e.g., FIPS 140-2/3).

Identity and Access Management (IAM)

Strong IAM reduces unauthorized access and privilege misuse. Evaluate authentication, authorization, and session management capabilities.

What authentication and authorization mechanisms do you support (e.g., SAML, OIDC, MFA, role-based access control, attribute-based access control)?

• Confirm support for federation with your identity provider and adaptive access policies.

How are privileged access and shared accounts governed, and what logging and approval workflows are in place for elevation?

• Look for just-in-time access, session recording, and approval workflows tied to ticketing systems.

Logging, Monitoring, and Observability

Comprehensive logging and monitoring enable detection, forensics, and accountability. Ensure you can ingest, retain, and analyze logs in line with your operational and compliance needs.

What logs and telemetry are available (management plane, data plane, admin actions, API calls), and how long are they retained by default?

• Ask about log completeness, export formats (e.g., JSON, syslog), and integration with SIEM platforms.

How can you detect and alert on suspicious behavior, and do you provide guardrails or anomaly detection capabilities out of the box?

• Evaluate built-in threat detection, baseline behavior models, and coverage across services.

Incident Response and Transparency

During a security event, clarity on roles, communication, and remediation reduces impact. Define expectations before an incident occurs.

What is your defined incident response process, including notification timelines, severity classifications, and communication channels during a security event?

• Request playbooks, service-level expectations for updates, and post-incident report content and turnaround time.

How do you handle vulnerability disclosure, patch management SLAs, and providing evidence for forensic analysis when requested?

• Check published SLAs for patching critical vulnerabilities and availability of forensic artifacts (disk images, memory captures) under NDA.

Contractual, Legal, and Risk Controls

Contracts and data processing agreements codify responsibilities, liabilities, and remedies. Ensure controls are reflected in legal documents to protect your organization.

Which data processing and business associate agreements do you offer, and what key security clauses are included (e.g., audit rights, subprocessor transparency, data return or deletion on termination)?

• Confirm indemnity, limitation of liability, and whether security requirements are enforceable by downstream customers.

How do you disclose subprocessor changes, and what mechanisms allow you to object or require additional security assurances for new subprocessors?

• Request visibility into supply chain risk management and business continuity plans.

Use these security questions to align expectations, close configuration gaps, and build a measurable security posture with your cloud providers. Revisit them periodically as services evolve, compliance requirements change, and your risk management practices mature.