Before activating the support or feature license on an ESXi deployment, what must be applied?

In an ESXi deployment, before activating a support or feature license, it is necessary to apply a capacity auth-code. This code is crucial because it serves as the underlying authorization for the resources and features that can be utilized within the ESXi environment. The capacity auth-code essentially confirms that the deployment is licensed to support the specified hardware capabilities and features, enabling the proper functioning of the system in accordance with the licensing terms.

An activation key, while important for other licensing processes, is distinct from the capacity auth-code, which is specific to the licensing of resources. A service definition does not apply here, as it refers to a set of configurations or specifications about a service rather than a licensing requirement. An upgrade code typically relates to transitioning between versions or tiers of software, rather than the initial licensing needed for support or features in a deployment. Thus, the correct prerequisite for activating the required support or feature license is indeed the capacity auth-code.