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ISO 27001 Documented Information Beginner’s Guide

Last updated Mar 30, 2025

Author: Stuart Barker | ISO 27001 Expert and Thought Leader

What is ISO 27001 Documented Information?

The standard requires documentation for the information security management system ( ISMS ) and the organisations operational procedures.

The driver is based on having process maturity.

The standard wants processes to be conducted in the same way and to deliver the same result irrespective of who operates it.

It acknowledges that the extent of the documented information can differ depending on organisational size.

The level and extent of your documentation will be based on

  • your size
  • your activity
  • your products
  • your services
  • the complexity of who you are
  • your processes
  • and the competency of persons.

Why is it important?

Having documentation is important for the following reasons

Consistency: having documented processes ensures a consistent approach to doing things. In turn this can reduce errors and mistakes.

Evidence: having processes that create documented records will evidence that the process is in place and that the process is operating effectively and as intended.

Process Maturity: having process maturity can provide a model of progressive improvement in processes that can be used to assess an organisation’s capabilities and to provide an improvement path.

Accountability: documented information drives organisational accountability.

ISO 27001 requirement for Documented Information

As the standard heavily relies on documented information the following ISO 27001 Clauses and ISO 27001 Annex A controls address it directly. You should read implementation guide for details on exactly what is required and how to implement it.

ISO 27001 Clause 7.5.1 Documented Information

ISO 27001 Clause 7.5.2 Creating and Updating Documented Information

ISO 27001 Clause 7.5.3 Control of Documented Information

ISO 27001 Annex A 5.37 Documented operating procedures

ISO 27001 Toolkit

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.