What type of discovery can only use the Infrastructure pattern?

The correct answer is indeed focused on Horizontal Discovery, which is the type of discovery that exclusively utilizes the Infrastructure pattern. This approach emphasizes the identification and mapping of networked devices and their interconnections, primarily focusing on the infrastructure of the IT environment.

Horizontal Discovery plays a pivotal role in revealing the various components that make up the physical and virtual infrastructure. It helps in understanding how these components interact with each other, facilitating the management of assets and services across the network. The Infrastructure pattern is particularly suited for this type of discovery as it captures details like servers, routers, switches, and other network devices, illustrating how they are configured and connected.

In contrast, the other types of discovery mentioned involve different patterns and focus areas. Vertical Discovery, for example, primarily looks at the applications running on specific servers and their relationships, while Application Discovery focuses on identifying application services and their dependencies. Service Discovery, on the other hand, deals with mapping services to the underlying infrastructure to understand service delivery and operation.

By leveraging the Infrastructure pattern, Horizontal Discovery provides a crucial foundation for IT asset management, ensuring visibility across the entire infrastructure landscape.