Overview
ISO/TS 22317:2021 - "Security and resilience - Business continuity management systems - Guidelines for business impact analysis" - provides practical guidance for establishing and maintaining a documented business impact analysis (BIA) process aligned with ISO 22301. It is a Technical Specification intended for all organizations, regardless of size, sector or geography. The document is non-prescriptive: it does not mandate a single way to perform a BIA but offers adaptable methods and examples to suit different needs, resources and contexts.
Key topics
- BIA fundamentals and prerequisites
- Define context and scope, secure leadership commitment, allocate resources and clarify roles and responsibilities (notably BIA leader and activity owners).
- Structured BIA process
- Plan the BIA, agree the approach, collect information, analyse impacts and consolidate results.
- Typical process steps in the specification: plan BIA → define impacts, impact types and criteria → define time frames and methodology → prioritise products/services → identify prioritized activities → set RTOs → identify resources and dependencies → analyse and obtain management approval → review.
- Impact measures and outcomes
- Identification and justification of business continuity priorities and requirements.
- Estimation of maximum tolerable period of disruption (MTPD), recovery time objectives (RTOs) and applicable recovery point objectives (RPOs).
- Identification of resource needs, interdependencies, suppliers and legal/regulatory impacts.
- Roles, documentation and review
- Guidance on roles, data collection methods, examples for performing BIA and periodic review (e.g., annually or when significant change occurs).
Applications
ISO/TS 22317:2021 is practical for organizations and professionals who need to establish or improve BIA capability and to feed business continuity strategy decisions:
- Business continuity managers and BCMS implementers using ISO 22301.
- Risk managers, operational resilience and incident response teams.
- Executives and top management who must approve priorities and resource requirements.
- Consultants and auditors designing, assessing or validating BIA processes.
Practical uses include prioritizing products and services, setting RTO/RPO requirements, identifying critical suppliers/dependencies, and justifying continuity investments and recovery strategies.
Related standards
- ISO 22301 - Business continuity management systems - Requirements (alignment and use case).
- ISO 22300 - Vocabulary for security and resilience.
- ISO/TS 22317 is designed to be used alongside ISO 22301 and complements guidance found in related documents (e.g., ISO 22313 guidance on BCMS implementation).
Using ISO/TS 22317:2021 helps organizations implement objective, repeatable BIA processes, produce defensible continuity priorities, and improve resiliency and security planning.