Smart Factory Assembly provides optimal process control, control of tools and the traceability of production steps. Assembly is networked into a harmonized process. The core of digital work instructions is the simple breakdown of the assembly process into single work steps. At each step the system intuitively guides the operator through the assembly process. In addition, all relevant assembly tools can be connected to the system. This enables total process security, and the resulting data creates transparency in order to identify the potential for optimization and ensure the traceability of production data.