Almost a decade ago, as VoIP deployments commenced, the concept of a session border controller (SBC) emerged to provide secure access and to support "peering" functionality. While security remains a key SBC function, as VoIP penetration has continued to increase in both fixed and mobile networks, the role of the SBC has continiued to expand to support additional services and capabilities, including call admission control, interoperability between SIP variants and transcoding. Accordingly, this white paper discusses how IP-based service innovation will impact and shape the future of SBC.