"The ability of a business to continue to operate in the face of disaster." (Tom Petrocelli, "Data Protection and Information Lifecycle Management", 2005)
"A business function that attempts to prevent any major disruptions to business processes, both through planning, to avoid unplanned outages in the first place, and then through implementing solutions that minimize the effects of unplanned outages if they do occur." (David G Hill, "Data Protection: Governance, Risk Management, and Compliance", 2009)
"The continuance of business operations regardless of disasters that befall it." (Yvette Ghormley, "Business Continuity and Disaster Recovery Plans", 2009)
"The degree of uninterrupted stability of an organization’s systems and operations in spite of potentially disruptive events." (DAMA International, "The DAMA Dictionary of Data Management", 2011)
"Capability of the organization to continue delivery of products at acceptable predefined levels following disruptive incident" (ISO 22301:2012, 2012)
"The processes and procedures that an organization puts in place to ensure that they can continue to provide essential functions during and after a disaster." (Rebecca Hamilton & Diane Brown, "Disaster Management and Continuity Planning in Libraries: Changes since the Year 2000", 2016)
"Capability of an organization to continue delivery of products or services at acceptable predefined levels following a disruptive incident. Business continuity embraces all the operations in a company, including how employees function in compromised situations." (William Stallings, "Effective Cybersecurity: A Guide to Using Best Practices and Standards", 2018)
"The capability of the organisation to continue delivery of products and services at acceptable pre-defined levels following a disruptive incident." (David Sutton, "Information Risk Management: A practitioner’s guide", 2014)
"The act of ensuring that core business units and critical services operate at an acceptable level after some unexpected interruption or a crisis incident." (Athanasios Podaras et al, "Regression-Based Recovery Time Predictions in Business Continuity Management: A Public College Case Study", 2021)
"Business process responsible for managing risks that could seriously affect the business" (ITIL)