ATLANTA--(BUSINESS WIRE)--Today, the retail industry joins the growing movement of Anything-as-a-Service business models with the introduction of Maintenance-as-a-Service (MaaS). MaaS is a new service delivery model that changes how companies are charged for traditional Point of Sale (POS) support and how those services are delivered. Source Support Services (Source), a leading global post-sales support provider, pioneered MaaS to address the financial challenges that technology convergence has