Business Impact Analysis (BIA): Method and Template

BIA Method (Practical Outline)

1. Confirm BCMS scope and activity catalogue
2. Interview process owners; capture inputs, outputs, and peak periods
3. Score impact over time (financial, legal/regulatory, customer, reputational, safety)
4. Map dependencies — people, sites, suppliers, applications, data, facilities
5. Derive recovery objectives and minimum acceptable service levels
6. Prioritise activities; feed results into strategies and the BCP

Template Fields

• Activity name, owner, BCMS scope reference
• Description / peak demand / seasonality
• Impact timeline notes (qualitative + quantitative where available)
• Upstream / downstream dependencies
• MTPD, RTO, RPO (as determined by the organisation)
• Workarounds and minimum staffing / tooling
• Related DR systems and data stores

Outputs Auditors Expect to See Used

BIA results should appear in continuity strategies, resource requirements, and exercise scenarios — not as a static spreadsheet filed once. Revisit after major change (new products, M&A, cloud migration, ransomware posture shifts).

How CyberSilo Helps

• BCMS programme artefacts — BIA, plans, exercise records — organised in Compliance Standards Automation
• ThreatHawk SIEM / SOAR for detection, response evidence, and ICT continuity telemetry during disruption
• Advisory scoping for certification readiness — contact CyberSilo

Frequently Asked Questions

Is a BIA the same as a risk assessment?

No. Risk assessment looks at threats and likelihood; BIA focuses on impact of activity disruption and recovery needs. ISO 22301 expects both in the operational cycle.

How often should we update the BIA?

At planned intervals and after significant change. Frequency is organisation-defined and should be justified.

Who owns the BIA?

Business owners typically own activity impact; BCM / resilience leads facilitate method consistency.

Related ISO 22301 Resources

DR plan · Clauses · Threat intelligence & BCP · Hub