<p>Rapid diffusion of electric vehicles (EVs) is central to global decarbonization strategies. Yet, large-scale uncoordinated charging threatens the stability of the distribution grid, increases congestion costs, and can erode the environmental benefits of electrified mobility. Smart charging has therefore emerged as a critical paradigm for aligning mobility demand with power system constraints through adaptive, information-driven coordination. This commentary develops a comprehensive operations-management–oriented perspective on EV smart charging as a complex socio-techno-economic system shaped by interacting physical infrastructures, digital platforms, market mechanisms, and heterogeneous human behavior. We synthesize existing research into an integrated framework that distinguishes between a physical layer (vehicles, charging infrastructure, grids, and mobility needs) and a digital layer (data exchange, coordination, and service provision), and organize the landscape into five interdependent ecosystems: electricity, charging, mobility services, users, and regulation. Building on this framework, we articulate five key research opportunities: (i) coordination of heterogeneous stakeholders with conflicting objectives; (ii) scalable and flexible control strategies; (iii) strategic infrastructure and investment planning under uncertainty; (iv) effective governance and policy design, and (v) modeling EV user preferences and behavior. We highlight how addressing these opportunities can enhance system efficiency, reliability, sustainability, and user acceptance. By positioning smart charging at the intersection of energy and mobility systems and emphasizing the central role of digital-physical integration, this commentary provides a unifying lens and a forward-looking research agenda for scholars seeking to contribute to the design of smart, sustainable urban mobility and power systems.</p>