This document discusses service providers transitioning to next-generation networks using network function virtualization (NFV) and software-defined networking (SDN). It notes that NFV allows virtualization of network functions for more flexible service offerings. The document also outlines some industry trends like open source, NFV, and SDN that are addressing challenges and opportunities for service providers. Finally, it discusses the potential market growth of SDN and NFV technologies and priorities for virtualizing network functions in the service provider segment.