Some operational contingencies are considered core because the operation could not function without it. A core operational contingency is one that must remain functioning. This is important for contingency planning, so that when you plan for the more common
risks that the operation faces, you ensure that the core ones are taken care
of, and will continue to run. If you run an e commerce site, for example, you would consider the ability to keep your website running and continue taking orders as a core contingency. Everything else can suffer from some downtime if necessary, but keeping the revenue coming in is a core competency. The non core competencies are the ones that can be disrupted without entirely disrupting the business.