Which of the following represents availability in the CIA Triad?

In the context of the CIA Triad, which stands for Confidentiality, Integrity, and Availability, availability refers to ensuring that information and resources are accessible to authorized users when needed. Among the options provided, shopping sites best exemplify availability.

Shopping sites require constant access to their platform for users to browse products, make purchases, and receive customer support. If a shopping site is unavailable due to downtime or technical issues, customers cannot complete transactions, leading to a loss of business and trust. This scenario demonstrates the importance of maintaining high availability.

While air traffic control data, financial information, and government secrets also have availability requirements, they emphasize confidentiality and integrity just as much, if not more. For instance, the confidentiality of air traffic control data is critical for safety, and the integrity of financial information is essential for transactions and accounts. Therefore, shopping sites clearly illustrate the concept of availability as they are designed to provide continual access to users as part of their fundamental operation.