calls to a business and support controls to transfer a connection from a public network user to different location, agent, and/or automated application based on the caller identity. Communication services and platforms continue to expand in their ability to provide a rich context for communication enabled by mobile access networks; sensors present in mobile hand-held and embedded devices; willingness of users to share information on their location, activities, etc.; data collection and analytics used to infer context from prior activity; service provider privacy policies and information controls that allow a user to opt-in to different levels of context data handling. The 3GPP-specified IMS³ is one example of the above components being used together in a platform. IMS architecture refers to components and layers as service applications, session control and management, access networks, and end point devices or user equipment. This layering inte- grates traditional telecom services as well as provide the platform framework for future multimedia services over IP on mobile phones. IMS uses SIP to negotiate and establish connections, a home subscriber server (HSS) directory, public key encryption with private keys stored in the HSS and UICC/SIM of a connected device, gateways between networks that adapt media, separate media and control, and maintain the security and integrity of the platform (Figure 2.4). Significant services and platforms have emerged that do not rely on a complete IMS framework. The session control and management layer is not always needed and/or alternatives for components in this layer may be less costly and complex to deliver a wide variety of services. Capabilities such as signaling and identity are frequently tailored to and tightly integrated with a web application, community, and usage scenarios. A content distribution network (CDN) is another example of a service platform used to optimize the delivery of content that many customers want at the same time in the same general location. A CDN u