Software-defined fog orchestration for IoT services

This chapter presents a scalable software-defined orchestration architecture to intelligently compose and orchestrate thousands of heterogeneous Fog appliances (devices, servers). Specifically, it provides a resource filtering-based resource assignment mechanism to optimize the resource utilization and fair resource sharing among multitenant Internet of things (IoT) applications. The chapter also presents a component selection and placement mechanism for containerized IoT microservices to minimize the latency by harnessing the network uncertainty and security while considering different applications' requirement and capabilities. It describes a fog simulation scheme to simulate the aforementioned procedure by modeling the entities, their attributes, and actions. The chapter also provides the results of practical experiences on the orchestration and simulation. It outlines numerous difficulties and challenges to develop an orchestration framework across all layers within the Fog resource stack and describes a prototype orchestration system that makes use of some of the most promising mechanisms to tackle these challenges.