In a Cisco SD-WAN Multi-Region fabric with three or more regions, which topology type is supported in each noncore region?

In a Cisco SD-WAN Multi-Region fabric with three or more regions, non-core regions can use any topology type. This flexibility allows administrators to design each non-core region based on its specific traffic patterns, performance requirements, and cost considerations. For example, a non-core region might use a hub-and-spoke topology for centralized access, while another might use a full-mesh for high availability and direct communication. The core region typically uses a full-mesh topology to ensure robust inter-region connectivity. Therefore, limiting non-core regions to only full mesh, partial mesh, or hub and spoke would restrict design choices unnecessarily.