When is the Design workflow used in Cisco DNA Center?

The Design workflow in Cisco DNA Center is primarily used for greenfield deployments, meaning new network installations where no existing infrastructure is present. This workflow allows you to define the network hierarchy, IP addressing schemes, device roles, and policies from scratch. While DNA Center can manage brownfield (existing) deployments, the Design workflow's purpose is to establish the initial network blueprint. Wiping out existing data is not the function of the Design workflow; that would typically be a factory reset or re-imaging. Modifying existing configurations or provisioning new devices in a brownfield scenario would use other workflows like Provision or Plug and Play (PnP), not the initial Design phase.