A week of severe rainstorms has flooded your company's building, ruining all servers and resulting in three weeks of downtime. What is this an example of?

The situation described is an example of a lack of availability. The severe rainstorms caused flooding that ruined all the servers, leading to a significant disruption in operations resulting in three weeks of downtime. In the context of cybersecurity and IT services, availability refers to the ability of a system to remain accessible and operational when needed. The servers being completely unusable signifies that the business cannot provide its services or access its data during that period, directly demonstrating a lack of availability.

In contrast, while data loss may occur as a consequence of the server damage, the primary issue here is not just the loss of data but the inability to access any services at all. Disaster recovery typically refers to the processes and strategies put in place to recover from such incidents, but it does not describe the incident itself. Business continuity encompasses the broader plan to ensure that essential functions can continue during and after a disaster, which would include aspects of disaster recovery, but again, the specific event of flooding led to a lack of availability. Thus, the most accurate characterization of the scenario is the lack of availability of services and systems to the organization.