# Smart Factory Web--A Blueprint Architecture for Open Marketplaces for Industrial Production
## 5 Smart Factory Web Approach
### Supply Chain and Supply Network Modelling  
The transparency and management of supply chains and entire supply networks is of great importance for companies. The COVID-19 pandemic in particular has shown how vulnerable supply chains can be and how quickly supply bottlenecks can occur. In addition to the avoidance of supply failures, supply chain laws may mandate the transparent description of supply chains.  
The German Federal Ministry for Economic Cooperation and Development (BMZ) and the German Federal Ministry of Labor and Social Affairs (BMAS) have produced new legislation for this purpose. The Supply Chain Act will come into force on 1 January 2023, and will obligate companies (depending on the number of employees) along the supply chain to comply with safety, environmental and human rights standards and to create monitoring opportunities [22].  
For the prevention of supply chain disruption, the resilient development of supply networks, and the verification of safety, environmental and human rights standards, the entire supply chain must be described and monitored transparently. Flexible, standardized information management systems are needed to transparently describe and monitor supply chains. The SFW platform enables the modeling and visualization of supply chains. Figure 13 shows the supply chain interface of SFW.  
The SFW platform enables map-based and tabular visualization of individual supply chains and entire supply networks. The supply chain interface enables the import of supply chains in JSON format via the web interface of the SFW platform. Using the standardized data format JSON, supply chains can be described in a structured and language-independent way [23].  
In addition, the SFW platform enables the description and modeling of supply chains via web forms. Supply chains in SFW are modeled according to the product structure (Bill of Materials BOM). Figure 14 shows an example of the product structure of a computer mouse. The computer mouse consists of a scroll wheel, a printed circuit board and other products/components. The printed circuit board in turn is equipped with an LED, a ca  
Figure 13: Smart Factory Web supply chain interface.  
pacitor and other components. The product structure of the computer mouse can thus be broken down to the respective raw materials.  
Starting from the top product in the supply chain, the product and supplier structure is broken down to the individual raw materials and raw material suppliers. The entire product and supplier structure from the original equipment manufacturer (OEM) to the individual raw material suppliers (Tier n) can thus be mapped. Figure 15 shows the supplier structure of the computer mouse from Figure 14.  
Figure 14: Product structure (BOM) of a supply chain.  
Figure 15: Supplier structure of a supply chain.  
The supplier structure of the computer mouse manufacturer can be broken down transparently with the aid of the product structure in Figure 14. The computer mouse manufacturer (OEM) is supplied with scroll wheels, printed circuit boards and other components by its direct suppliers. The manufacturer of printed circuit boards (Tier 1), in turn, is supplied with LEDs and capacitors by its direct suppliers. The manufacturer of capacitors (Tier 2) is supplied with aluminum and other raw materials.