ISO/IEC 20000-1 Internal Audits for IT Service Management

Independent. Structured. Certification-Ready.

ISO 20000-1 Internal Audits That Strengthen Service Delivery and Readiness

Wintersmith Advisory conducts ISO/IEC 20000-1 internal audits that evaluate the effectiveness of your IT Service Management System (ITSMS), identify nonconformities and risks, and prepare your organization for successful surveillance, recertification, or initial audits.

Why choose Wintersmith Advisory for ISO/IEC 20000-1 auditing?

• ISO/IEC 20000-1:2018-aligned audit methodology

• Audits conducted per ISO 19011 best practices

• Evaluation of ITSM process design, implementation, and effectiveness

• Review of SLA performance, service continuity, and incident handling

• Identification of risks, nonconformities, and improvement opportunities

• Objective reporting with corrective action guidance

Audits That Look Beyond the Checklist

Internal audits are essential for maintaining ISO/IEC 20000-1 certification and ensuring the ITSMS continues to meet business and customer needs. Our audits go beyond checklists—we assess how well your service management system performs in real operations.

End-to-End Evaluation of Service Management System Performance

We evaluate core processes such as change management, configuration control, service availability, and service reporting. We review your documentation, interview stakeholders, and provide clear findings with actionable recommendations. Whether preparing for a surveillance audit or identifying improvement areas, we deliver practical insight you can act on.

Audit Execution Built for IT Service Excellence

• Designed for service performance and certification success

• Technical and process-focused audit coverage

• Pre-certification readiness audits for first-time applicants

• Support for surveillance and recertification preparation

• Clear, confidential reporting and CAPA support

Let’s Prepare Your ITSMS for Its Next Audit

Need an independent internal audit for ISO/IEC 20000-1?
Let’s schedule an audit that helps you strengthen your ITSMS.