Industry 4.0 symbolizes various applications and technologies that have many possible positive effects within the industrial field. The complex production area contains longer product cycle times and multiple levels of subassemblies, and this reflects a higher need for raising production efficiency and optimizing the resources and time. Adopting developed Industry 4.0 technologies is considered a promising way for achieving this since they contribute directly to real-time data analysis, remote operation, and complete product life analysis next to further tools that allow more profound and inclusive analysis in the target complex production system. This article discusses the integration of Industry 4.0 technologies with in-plant complex production processes. A proposed system with an optimization purpose is designed and described that focuses on using multi-level integration processes effectively.