iables are added, their properly normalized sum tends toward a normal distribution even if the original variables themselves are not normally distributed) with a given mean value, which will the best choice to maximize the number of subscribers for the offered QoS (e.g. bitrates in the case of IAS). Overall, one may note that QoS and pricing are directly related, i.e. higher QoS imposes higher price of services, and vice versa. 9.8 QoS Enforcement Broadband and ultra-broadband networks are used for delivery of multiple heteroge- neous services, SO QoS is becoming more important. Also, more people on the global scale use telecom/ICT services and applications because more people have broadband access, either fixed or mobile, or both. With the saturation of horizontal markets in the telecom world (referring to the number of human subscribers), the expansion of the tele- com/ICT world is targeted at connection of different "things" to the Internet (they are much more in number than humans), which when connected to the network are referred to as being "smart." And many smart services (for control of smart things) require QoS support also. From the twentieth century the QoS provisioning in the telecom/ICT world has been based on standards (from the ITU, 3GPP, the IETF, the IEEE, etc.) regarding technical matters and licenses (based on telecommunication legislation, such as laws and rules), 9.8 QoS Enforcement which refer to policy matters or interrelated policy-technical matters. One such example is spectrum allocation for mobile operators. Because spectrum is scarce it is given with licenses which impose certain obligations regarding QoS parameters. But for spectrum management there is a need for regional and global harmonization, with the aim of the same mobile devices (e.g. smartphones) being used in different networks in different countries (e.g. for roaming). However, QoS will not exist just by requesting telecom operators and generally service providers to include mandatory standards or licenses. In order to have