Over the years, the evolution of cellular networks from the first generation (1G) to the fifth generation (5G) had a profound impact on different aspects of our life. Particularly, the world has seen a rapid digital transformation in the last few years that has changed the way people communicate, conduct business, and search for information. A critical element of this digital transition is wireless connectivity. It is expected that 5G and beyond (5G&B) networks will pave the way toward realizing the individuals technological aspirations including holographic telepresence, e-health, pervasive connectivity in smart environments, massive robotics, three-dimensional (3-D) massive unmanned mobility, augmented reality, virtual reality, and Internet of Everything.