The hub and spoke model involves a central hub location that sources products and provides a single point of contact for clients. Spoke locations are spread across various cities and countries and provide localized, customized services and report to local client offices. The hub handles people development, client relationships, quality compliance and drives common delivery standards, while spokes focus on local service delivery. Key advantages include flexibility to add new spokes easily and efficient scheduling, while disadvantages include reliance on the hub and potential delays affecting the whole network if the hub or spokes are impacted.