ISO 27001 A.5.30: Build ICT Continuity Readiness
ISO 27001 A.5.30 addresses planning, implementing, maintaining and testing ICT readiness against business continuity objectives and ICT continuity requirements. The practical question is whether the technology and information needed for priority work can become usable within the required conditions after disruption. A backup record alone cannot answer that question.
What A.5.30 requires in practice
Control A.5.30 asks that ICT readiness is planned, put in place, kept up and tested, with business continuity objectives and ICT continuity requirements as the starting point. In plain terms, the technology that supports key services must be able to recover to the level the business needs, and the organisation must have shown that it can.
The control has a clear chain. Start from what the business needs, such as how quickly a service must be back and how much recent information may be lost. Translate that into ICT requirements. Put arrangements in place, keep them current and test them. A test that has never been run proves little. The standard does not require a specific architecture; backups, alternate sites or redundant services are methods chosen to meet the objectives set.
Start with the activity that must continue
Identify priority business activities and the consequences of interruption over time. Determine the information, applications, communications, people and supporting services they require. A technically important server is not automatically the first recovery priority; the order should reflect what the business must do and which dependencies enable it.
ISO 27002 guidance uses business impact analysis to establish continuity needs. Recovery time objectives express how soon the relevant activity or resource needs to be restored. Recovery point objectives concern the point to which information must be recoverable, reflecting tolerable loss of recent data. These are different decisions and should not be collapsed into one generic “recovery target.”
Include performance and capacity. A service that starts within the desired time but supports only a fraction of necessary transactions may not meet the business requirement. Decide what minimum operation is acceptable and how long that reduced level can continue.
Build a recovery path that includes dependencies
Map the components needed to make the service usable. Identity, networking, configuration, keys, supplier support and competent personnel may all matter. A recovery plan that assumes these resources remain available can fail in the very scenario it is intended to address.
Choose strategies based on needs, risks and feasible resources. Different services may justify different arrangements. A standby environment, restoration process or alternative operating method can contribute, but no particular architecture is universally mandated by A.5.30. Management should understand the gap between desired recovery and demonstrated capability.
Why ICT continuity readiness matters to the business
When core systems fail, revenue, service levels and reputation fall with them. Technology teams often assume recovery will work until the day it is needed. Readiness grounded in business objectives stops guesswork: the organisation knows what recovery it has promised, what it can actually deliver and where the gap lies. That allows sensible investment, because money goes into the systems that matter most. Customers and regulators increasingly ask for evidence that recovery has been tested, and a credible answer is a strong point in client assessments and audits.
How to implement A.5.30
Work from business need to technical arrangement, and test at each stage. A practical order follows. Recovery readiness is credible only when it is tied to what the business has said it needs. Hold a conversation with service owners before making technical choices, since their answers may be more modest or more demanding than IT assumes. Document the gap accurately, record who accepted any remaining shortfall, and note which systems depend on which others, since recovery order matters. Where the business wants faster recovery than current arrangements provide, take that to management as a decision about investment, not a quiet technical shortfall.
- Obtain recovery expectations from the owners of critical services.
- Translate them into ICT requirements for systems, data and connectivity.
- Compare current arrangements with those requirements and note gaps.
- Implement or improve backup, recovery and alternative arrangements.
- Keep documentation and arrangements current as systems change.
- Test recovery realistically, including restoring from backup.
- Record results and act on what the tests reveal.
Illustrative manufacturing example: restored data without the application
A hypothetical manufacturer successfully restores production records from backup. The application cannot use them because a required configuration and licence arrangement were not included in the recovery preparation. The test had previously checked only that backup files were readable.
The service owner expands the recovery sequence to cover the complete working service and relevant supplier dependencies. A controlled test verifies that authorised users can retrieve and use representative records. The result distinguishes data restoration from recovery of the business capability that depends on it.
Illustrative software example: a standby system lacks capacity
A hypothetical software provider demonstrates that its standby environment starts quickly. During a more realistic exercise, it cannot support the priority customer workload and a dependent authentication service is unavailable. The headline recovery time concealed two important limitations.
The team defines the required minimum capacity, addresses the dependency and retests within an agreed safe scope. Where full capacity cannot be justified, management decides and communicates a realistic reduced-service arrangement. The objective becomes an evidence-based commitment rather than a number chosen for a presentation.
Test the assumptions that could defeat recovery
Plan exercises and tests with clear objectives, authority and safeguards. A discussion can test decisions and contacts; a technical restoration test can examine actual recovery capability. The chosen method should answer the question being asked and avoid uncontrolled impact on live operations.
Use realistic constraints where appropriate. Consider whether key personnel are unavailable, normal administrative access is affected or a supplier cannot respond immediately. Record limitations of the test so that a narrowly scoped success is not presented as proof of every scenario.
Maintain readiness as services change
New applications, larger data volumes and changed supplier arrangements can invalidate recovery assumptions. Include continuity implications in change decisions and update the relevant plans and resources. Recovery knowledge should not remain with a single engineer whose absence would make the plan unusable.
After a test or real disruption, identify gaps, assign action and verify improvement. Check the return from recovery arrangements to normal service, including reconciliation of information and removal of temporary access. Readiness is maintained through these changes; it is not a one-time project sign-off.
Evidence and weak assurances
Useful evidence includes business-derived requirements, agreed strategies, recovery procedures, competence arrangements, test results and resolved findings. A.5.30 calls for tested readiness but does not prescribe a universal annual test date or fixed recovery interval.
Common weak assurances include successful backup notifications, supplier marketing claims and tests performed only by the plan’s author under ideal conditions. Compare the measured result with the actual requirement. Explain any shortfall accurately and obtain an authorised decision about treatment, rather than changing the objective solely to make the test pass.
Common nonconformities with A.5.30
Auditors commonly find recovery assumed rather than demonstrated. Auditors commonly find recovery assumed rather than demonstrated. They typically ask when recovery was last tested, what was learned and which actions followed from the result, and whether service owners ever saw the outcome.
- Backups taken but never restored in a test.
- Recovery expectations never agreed with the business, so ICT arrangements have no target.
- Test results showing shortfalls with no follow-up action.
- Systems changed or replaced without updating the recovery arrangements.
Frequently asked questions
Is backup the same as ICT continuity?
No. Backup can support recovery of information. Continuity readiness also concerns usable services, dependencies, people, timing and capacity required by priority activities.
Are recovery time and recovery point the same?
No. Recovery time concerns how soon the needed capability must return. Recovery point concerns how current the recovered information must be. Both should reflect business needs.
Does the standard require a second data centre?
No universal architecture is prescribed. Select and test arrangements appropriate to your continuity requirements, risks and resources. Demonstrated capability matters more than the label attached to the solution.
Connect recovery promises with tested capability
Request Sterling support for ICT continuity governance. Consulting and scoped Effivity ISO & GRC automation software can support requirements, ownership and follow-through. Use 93 Annex A Controls training to strengthen control understanding. Independent certification remains separate. Return to the organisational controls guide.