When considering high availability in a security architecture, what term is used to describe the ability of a system to handle a growing amount of work by adding resources to the system?
Scalability is the correct term as it refers to the capability of a system to increase its total output under an increased load when resources are added. Scalability can be achieved by adding hardware, enhancing existing hardware capabilities, or implementing software solutions that allow a system to handle more transactions or to process more data.