Containers do not deliver anything substantial in an isolated or solo way. They need to be systematically built and provided with a network interface along with a port number. These lead to the standardized exposition of containers to the outside world, facilitating other hosts or containers to find, bind, and leverage their unique capabilities on any network. Thus, the network accessibility is paramount for containers to get noticed across and be utilized in innumerable ways. This chapter was dedicated to showcase how containers are being designed and deployed as a service, and how the aspect of container networking comes in handy in precisely and profusely empowering the peculiar world of container services as the days unfold. In the forthcoming chapters, we will deal and dwell at length on the various capabilities of Docker containers in the software-intensive IT environments.