s market driven. However, with the development of mobile technologies targeted specifically to the IoT (e.g. NB-IoT, and M-LTE in LTE-Advanced-Pro, and also 5G IoT network slicing approach), there are possibilities to have dedicated capacity for IoT services which can improve the QoS metrics (e.g. delay). Since the middle of the 2010s, there is also a trend to provide a telecoms single market (TSM) approach (e.g. in Europe enacted in 2016) [24], which puts all ICT/telecom/digital services in the same market, under the same legislation and regulation "umbrella." That offers the possibility to deliver IoT services as specialized services, which may use specific traffic management techniques in access and core networks. That will be particularly important for critical IoT, such as driverless vehicles control, industry automation, digital healthcare, and smart city services [40]). QoS regulation is also being considered as part of customer protection. However, one should note that customer protection is broader than QoS regulation - for example, for Internet services it also includes sales activities, customer complaints, resolution procedures, and user operator switching/disconnection policies. Regarding the regulation of cloud computing services, for example, within the tele- coms (or lately digital) single market strategy for Europe is noted the key role of cloud computing services for building the digital economy. That has led to legislation of a free flow of non-personal data regulation, which facilitates portability of data and the pos- sibility to switch between CSPs. The cloud computing services therefore have become crucial for development of the digital economy. For example, cloud services in the Euro- pean cloud market have increased five times in the period from 2013 to 2020 (i.e. from €9.5 billion to €44 billion) [41]. Most uses of cloud computing by companies in Europe are for hosting email systems and storing files in the clouds, and also for financial and accounting software applications (in these cas