In many organizations activities cannot proceed without ICT systems, so these must be returned to working order before activities can continue, and where possible and practicable the organization will need to coordinate its activities manually while ICT recovery proceeds; technology options depend on the technology and its relationship to the activity but are usually a combination of in-house provision, services provided to the organization by a third party and external services the organization has arranged. Ways of providing the ICT systems needed for prioritized activities can include geographic spread (the same technology at locations not affected by the same disruption), holding old equipment as emergency replacement or spares, and contracts for equipment supply or recovery work; because of the complexity of the technologies supporting ICT systems, comprehensive measures are often needed for timely recovery, with attention to the locations of technology sites and the distances between them, the distribution of technology across sites, adequate provision for increased numbers of remote-access users, the arrangement of unstaffed (cold) and staffed sites, improved telecommunications and higher levels of redundant routing, automatic failover rather than manual intervention to recover ICT systems, and accommodation of legacy ICT systems; where the organization runs ICT at several sites, each site can be sized to host the combined ICT of several sites; and where it uses highly specialized or custom technology with long installation and commissioning lead times it may need to increase protection of its ICT systems through special provisions for replacing or recovering their components; ISO/IEC 27031 gives more detailed guidance on ICT readiness for business continuity.
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