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ISO 27001 Annex A 5.30: ICT Readiness for Business Continuity – Practical Implementation Guide

ISO/IEC 27001:2022 Annex A · Control 5.30

ICT Readiness for Business Continuity: A Practical Implementation Guide

Prepare ICT capabilities to meet business continuity objectives under realistic disruption scenarios.

This control concerns planning, implementing, maintaining and testing ICT readiness based on continuity needs and recovery objectives.

Practical interpretation: Backups alone do not provide readiness. Recovery depends on architecture, capacity, people, suppliers, procedures, dependencies, data integrity and proven tests.

What should the control achieve?

  • ICT recovery objectives align with business needs.
  • Strategies address dependencies and realistic failures.
  • Recovery procedures are maintained and accessible.
  • Tests demonstrate achievable recovery.

Step-by-step implementation

1

Derive requirements

Translate business impact analysis into RTO, RPO, capacity and priority.

2

Map dependencies

Identify systems, data, identity, network, facilities, people and suppliers.

3

Select strategies

Use redundancy, backup, alternate sites, manual workarounds or replacement according to risk.

4

Document recovery

Create ordered procedures, contacts, credentials and validation criteria.

5

Test realistically

Exercise technical recovery and business service validation under varied scenarios.

6

Improve and maintain

Update after changes, tests, incidents and supplier developments.

What this could look like in practice

An online retailer sets a four-hour RTO and 15-minute RPO for ordering. Cross-region infrastructure, replicated data and runbooks are tested twice yearly. Business owners verify complete orders and payment reconciliation before success is declared.

ActivityPractical implementationEvidence
RequirementBusiness owner approves RTO and RPO.BIA and service record
Recovery designArchitecture addresses dependencies and capacity.Recovery design
TestTeam restores service and validates transactions.Test report
ImprovementFailed steps create owned corrective actions.Action tracker

Implementation evidence

  • Business impact analysis
  • RTO/RPO register
  • Dependency maps
  • Recovery architecture
  • Runbooks
  • Backup and replication records
  • Test reports
  • Corrective actions

Useful metrics

  • Services meeting tested RTO/RPO
  • Recovery tests completed
  • Critical test findings overdue
  • Runbooks reviewed after change

Common mistakes

  • Setting objectives without business owners.
  • Testing components but not end-to-end service.
  • Assuming replication protects against corruption.
  • Using unavailable credentials in runbooks.
  • Declaring success before business validation.

Questions an auditor may ask

  • How were recovery objectives determined?
  • Show dependencies for a critical service.
  • What did the last test prove?
  • How are changes reflected in recovery plans?
Implementation test: Recover a critical service from a realistic failure and let business owners verify data, transactions, access and performance.

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This independent educational guide paraphrases the practical intent of the control and does not replace the official ISO standards, professional advice or an organization-specific risk assessment. It is not affiliated with or endorsed by ISO.