**5. Deployment models and revenue scenarios of fog computing**

Understanding the different revenues and incentive structures employed through different deployment models is a challenge necessary to enable a vast adoption of fog computing systems. The different revenues and incentive models proffer a better understanding as to why:

i.Infrastructure providers would offer their resources to act as FN

ii.Users would want to make use of these FC resources.

Edge architecture, such as Wi-Fi deployments within cities, can be considered similar to FC deployment, which different organizations control. Characteristics of FC, like geographical distribution, security requirements, and FN heterogeneity, are related to the revenue models. They play a major role in how FNs can generate a potential revenue stream for FN providers [12]. Maintaining a suitable infrastructure with good computing network performance and power without sufficient FNs will be unrealistic. Providing incentive models for the provision and maintenance of FNs is essential. We consider the following four types of deployment models. The description below attempts to provide context for the deployment model based on the particular deployment approach being used in [12, 31, 35–37].
