Application dependency discovery is limited to applications and the servers they run on, with little to no visibility into other dependencies that are just as critical such as at the network, storage and virtualization layers.
FireScope SDDM supports the complete picture, telling you which applications on which vms are depending on another, which physical hosts and data stores those vms are running on, and which routers and switches they are plugged into. This is absolutely critical for effective change impact analysis, as a failed switch can have a larger impact on the business than a failed server.