INDUSTRY LANDSCAPE
        Software-Defined Networking (SDN) and Network Functions 
        Virtualization (NFV) are critical parts of a sweeping technology 
        evolution from proprietary, specialized hardware solutions to 
        commercial off-the-shelf-based hardware solutions.  
        Virtualized systems are enabled by frameworks that abstract  
        hardware resources into a consistent operating environment 
        for the software.  
        One of the most consequential impacts of this implementation 
        is the ability to integrate and scale software with telecom-
        grade efficiency.
        The industry is facing a software skills gap with the move from 
        hardware-based solutions to software-based solutions.
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   HIGHLIGHT OF CURRENT ACTIVITIES
     • The ATIS SDN/NFV Focus Group (FG) Phase 2 was launched 
        in January 2014 to build on previous efforts in SDN, which 
        resulted in ATIS’ Operational Opportunities and Challenges 
        of SDN/NFV Programmable Infrastructure (October 2013). 
     • The FG will conclude its work shortly to include:
         • An NFV global landscape
         • An analysis on inter-provider service chaining
     • Building on the work of the previous ATIS SDN FG and 
        current SDN/NFV FG, ATIS is launching a comprehensive 
        effort focused on inter-provider NFV open to interested 
        stakeholders.
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   STRATEGIC DIRECTION
     ATIS has identified common principles providing insight into 
     important aspects of SDN/NFV as a foundation for shaping its 
     program:  
     •Focus on the interoperability and interworking between 
     service providers
     •Engage web-scale companies with easy-to-use capabilities
     •Develop services that enable and enhance the user 
     experience
     •Preserve and enhance the value of the network
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      CROSS-ADMINISTRATIVE DOMAINS
                                                     Single Domain Service Chaining
                                                                      Network SP 1
              Enterprise A Site 1                     Enterprise domain tunneled (invisible) to Network SP 1 domain      Enterprise A Site 2
            Enterprise A       Enterprise A                        SP1                 SP1                                   Enterprise A
              Service             Service                        Service             Service                                    Service 
             Function 1         Function 2                      Function 1          Function 2                                Function 3
                                                                       Single Domain
                                                         Cross Domain Service Chaining
                  Network SP 1                                         Network SP 2                                       Network SP 3
                 SP1                SP1                                                                                  SP1                 SP3
               Service             Service                                                                              Service            Service 
              Function 1         Function 2                       Network SP1 domain tunneled                         Function 3          Function 4
                                                                (invisible) to Network SP 2 domain
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     CHALLENGES & HOT ISSUES
                    Operations & Customer                                                    Operations & 
                              Care                       SLA, Logs, Ticketing                Customer Care
                          Back-Office                                                          Back-Office
                                                       Ordering, Settlement  
                            Services                                                            Services
                                                        IMS, CDN, SDN, Web
                            Routing                                                              Routing
                                                          Discovery, Policy
                            Network                                                             Network 
                        Interconnection                  MPLS, Ethernet, IP                  Interconnection
                           Provider-1                                                          Provider-2
                       Cross Administrative Domain Service Function Chaining presents 
                         a multi-level challenge that can be addressed by interoperable 
                        NFV software primitives allowing for the delivery of many types 
                                          of aggregated business applications.
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