Audit Scope

11/09/2025

Author: Stuart Barker | ISO 27001 Expert and Thought Leader

The audit scope defines the boundaries of an organisation’s Information Security Management System (ISMS) and specifies exactly what will be included in the ISO 27001 certification or audit. It’s a formal statement that clearly outlines which parts of the business are covered by the ISMS, and which are not.

Key Components of an Audit Scope

A well-defined scope is critical because it ensures that the ISMS is focused, manageable, and aligns with the organisation’s business objectives. An audit scope typically details:

  • Organisational Units: Which departments, teams, or business functions are included.
  • Physical Locations: The specific buildings, offices, or data centers that are in scope.
  • Technologies & Systems: The hardware, software, and IT systems covered. This can include on-premise infrastructure, cloud services, and specific applications.
  • Processes & Services: The key business processes, products, or services that fall under the ISMS.

Example Scope Statement

The Information Security Management System (ISMS) covers the development, operation, and support of the company’s cloud-based [application], including all related IT infrastructure, data centres, and personnel located at the [City, Country] headquarters.

ISO 27001 Context

Defining the audit scope is a mandatory requirement under  ISO 27001 Clause 4.3: Determining The Scope Of The Information Security Management System. It’s a foundational step that must be based on the organisation’s context (ISO 27001 Clause 4.1: Understanding the Context of the Organisation) and the needs of interested parties (ISO 27001 Clause 4.2: Understanding The Needs And Expectations of Interested Parties). An auditor will use this scope statement to determine what they need to examine during the certification audit.

About the author

Stuart Barker is an information security practitioner of over 30 years. He holds an MSc in Software and Systems Security and an undergraduate degree in Software Engineering. He is an ISO 27001 expert and thought leader holding both ISO 27001 Lead Implementer and ISO 27001 Lead Auditor qualifications. In 2010 he started his first cyber security consulting business that he sold in 2018. He worked for over a decade for GE, leading a data governance team across Europe and since then has gone on to deliver hundreds of client engagements and audits.

He regularly mentors and trains professionals on information security and runs a successful ISO 27001 YouTube channel where he shows people how they can implement ISO 27001 themselves. He is passionate that knowledge should not be hoarded and brought to market the first of its kind online ISO 27001 store for all the tools and templates people need when they want to do it themselves.

In his personal life he is an active and a hobbyist kickboxer.

His specialisms are ISO 27001 and SOC 2 and his niche is start up and early stage business.