Electric Vehicles (EVs) offer significant potential as Distributed Energy Resources (DERs) through Vehicle-to-Grid (V2G) services, yet practical implementations into ancillary service markets remain at an early stage and lack mature business use cases. Frequency Containment Reserve (FCR) - a well-established utility battery service for primary control reserve - presents an opportunity to harness aggregated EV charging and discharging load for grid stabilization. This paper investigates the functional viability of providing FCR from public EV charging stations within the European energy market. Using the Smart Grid Architecture Model (SGAM), we develop a V2G‐FCR use case enabled by Electric Mobility Service Providers (EMSPs) orchestrating EV users' data interface, and Charging Station Operators (CSOs) acting as Balancing Service Providers. The resulting Computational Independent Model (CIM) defines harmonized roles and interactions across Business, Function, and Information layers, conforming to ENTSO‐E harmonized frameworks and IEC standards for pan‐European adoption. The proposed model shows how EV owners and CSOs can gain financial rewards while contributing to grid resilience through FCR. The CIM design provides a conceptual blueprint for subsequent platform-independent and platform-specific development, establishing the theoretical foundation for scalable deployment of V2G-based FCR services.