The paper addresses Scientific Visualization (SV) aspects in the Modeling and Simulation (M&S) environments, experienced by the author in the multidisciplinary European Research and Development (R&D) projects, which are expect to meet the challenges in the growing complexity of software tools and their visualization features, considered as an essential factor to improve their quality and efficient use. The visualization tools are considered as the natural integration mechanism to evidence the complexity and to provide missing integration solutions. Today’s visualization tools are equipped with highly interactive visual aids, which allow analysis and inspection of complex numerical data generated from high-bandwidth data sources such as simulation software, experimental rigs, satellites, scanners, etc… Such tools help scientist and engineers in data extraction, visualization, interpretation and analysis tasks, enabling them to experience high degree of interaction and effectiveness in solving their design problems. Today, the modern engineering design is, and has to be based on the M&S principles, as the key enabler to combine multidisciplinary workflows to manage and to structure such highly complex industrial solutions, which heavily include generic M&S tools and open standards solutions. The author experience, gained in solving the M&S problems in European R&D projects is presented throughout a time-span of last two-decades, where the software technologies have been researched and demonstrated, especially addressing the SV software evolution in engineering, and in addition, the information visualization in general.