In the Red Zone / Green Zone framework, which describes the Red Zone?

• A. Locations and instance types automatically included by reservations.
• B. Locations and instance types that won’t be covered by reservations without asking.
• C. A list of regions where reservations are prohibited.
• D. A policy for automatically applying reservations to obscure usage.

Answer: (B)

In the Red Zone / Green Zone framework, the Red Zone highlights where reservations won’t automatically cover usage. It describes locations and instance types that won’t be covered by reservations without you taking action, so you may incur on-demand costs unless you review and adjust coverage. This makes it the best choice because it directly defines Red Zone as areas that require attention to ensure reservation applicability.

The other options don’t fit: automatically included locations/types align with the Green Zone, not Red. Regions where reservations are prohibited aren’t the intended concept. A policy for automatically applying reservations to obscure usage mischaracterizes how reservations and coverage work.