During the evaluation of risks, it was observed that risk was first introduced by Bauer in 1960 as the risk perceived by the customer. Risk is basically introduced as perceived risk. Later, this risk became several dimensions of risk such as performance risk, financial risk, opportunity/time risk, psychological risk, social risk, privacy risk, safety/physical risk, and overall risk. These risks are mapped to the different types of digital services that are being offered by the public and private organizations of a smart city. The digital services of smart cities are basically divided into two types: face-to-face and face- to-screen. Face-to-face services are further divided into three types: technology-free consumer contact, technology-assisted consumer contact, and technology-facilitated consumer contact. Face-to-screen digital services are further classified into two types: technology-mediated consumer contact and technology-generated consumer contact. All digital services have been mapped to the multiple dimensions of risk mentioned in this chapter to show how the relationship with the digital services of a smart city has an impact on the perceived risk.