Facing increasing global competition, alongside tighter project budgets, shorter timelines and an expanding diversity of powertrain and vehicle variants, virtualization emerges as a critical success factor in automotive engineering. Bosch Service House developed a scalable Software-in-the-Loop (SiL) methodology for virtual vehicle creation, ensuring global availability and parallelization capabilities. The SiL framework enables the virtualization of all powertrain topologies, from internal combustion engines (ICE) over hybrid systems (PHEV, REEV) to electric vehicles (BEV, FCEV). Its modular architecture delivers tailored solutions for specific customer requirements, optimizing performance while minimizing development costs and efforts. The SiL setup comprehensively supports software testing, calibration and diagnostic pinpointing across different complexity levels and powertrain types. For ICE systems, it facilitates the provision of virtual electronic control units (ECUs) and virtual emission testing, including hybrid operation for real-driving scenarios. For hybrid and battery electric systems, the SiL framework further supports essential system engineering tasks such as thermal management, range prediction and model-based software feature development. This contribution outlines Bosch Service House's virtualization portfolio, illustrating exemplary use cases and highlighting the significant potential for future advancements in automotive engineering.