|On 21 January 2013, there was a fire at the central office of a telecommunications network operator
in Siegen, which resulted in more than 500,000 telephone connections being collapsed for several
hours and occasionally several days. Emergency calls were also not possible. The websites of the
district and the control center were offline. The local radio which typically acts as a central point of
information in such situations was out of service. But not only the civic-societal continuity, also the
operational continuity was affected (Reuter et al., 2017). In this example, both continuity and crisis
management are essential to recover to regular business resp. life.