PyCloudSim: modernized cloud computing simulation framework with the incorporation of SFC

Cloud computing has become an important technology for providing on-demand resources to customers. However, the traditional networking architecture used in cloud computing faces several challenges, such as inflexible and static network infrastructure, high latency, and lack of visibility and control. To overcome these challenges, Software-Defined Networking (SDN) has emerged as a promising technology that separates the control plane from the data plane and provides dynamic control over network traffic. By combining both technologies, Network Service (NS), which emerged through Network Function Virtualization (NFV) as Virtual Machine or Container, has become the favourable deployment method for infrastructures such as 5G core or LoraWan stack. However, conducting research in related areas is still challenging due to the cost and technical difficulties of implementing appropriate laboratory environments. Simulation tool such CloudSim or CloudSim Plus is still focused on cloud computing and lack incorporation of the concept of a Service Function Chain. Hence, in this paper, we present a discrete event simulation framework with enhanced cloud computing simulation, network simulation, and support for NS and SFC with realistic API call simulation.