Alongside other business objectives, the four factors mentioned above make the connectivity between ERP and PLM a necessity for ETO companies. Ideally, it would be great if there was a single system handling everything that an ETO manufacturer needs. However, during the early days of development, the product development application camp (e.g., computer aided design [CAD] and product data management [PDM] vendors) and the transactional enterprise system camp (e.g., ERP and supply chain management [SCM] vendors) were developing solutions in significant ignorance of each other. Also, ERP and PLM systems were not implemented at the same time for many organizations (often ERP was implemented earlier that PLM) and integration between the two systems seemed to be the only realistic option.
The Blurry Line between ERP and PLM
The purpose of integrating ERP and PLM is to ensure that product definition information (which is mainly generated by the product design and development department) is accessible instantly by the following processes (e.g., production and services). Also, data from non-design phases can be a valuable input for the decision-making process during the design and development stages. ERP and PLM vendors and implementers have developed technologies to integrate the two systems and to integrate CAD design information with enterprise software applications as well.
In the past, the boundary between the ERP camp and the PLM camp was quite clear. However, after seeing the market potential of PLM solutions, almost all major ERP players have entered into the PLM market. This doesn't necessarily mean that PLM solutions provided by ERP vendors integrate with ERP systems better than those provided by pure PLM vendors (sometimes it may take very long for an acquired PLM solution to be well integrated with its new owner's ERP system), but it should be somewhat easier to coordinate the efforts of integrating two systems together.
Both ERP and PLM vendors are trying to extend their respective solutions' capabilities to the other side. This effort makes the line between ERP and PLM blurrier—ERP solutions are now more capable of managing product data and PLM vendors are adding more transactional functionality in their offerings.
On one side, ERP solutions are increasing their inward capability of managing product data. This phenomenon can be found more significantly in ERP solutions specifically for the ETO industry. To explain how ETO ERP is advancing in providing PLM functionality, I selected two common sub-modules: product data management and product/item configurator. Both submodules are available in ETO ERP and Discrete ERP (which has more generic coverage on manufacturing industries) categories within the Technology Evaluation Centers' (TEC's) knowledge bases (KBs). The comparison of average rating scores (based on TEC's software selection methodology) of the two types of ERP on the selected submodules clearly shows that ETO ERP provides better PLM capability than Discrete ERP (see figure 1). These average scores are quite representative since they are based on 111 Discrete ERP and 35 ETO ERP solutions recorded in TEC's knowledge base. Although PLM-like functionality within an ETO ERP solution can't match what PLM can do, this extension may reflect that ETO manufacturers are eager to enhance the connectivity between product data and operation data.
Figure 1. Rating scores of two submodules within ETO ERP and Discrete ERP
On the other side, PLM vendors are now working on expanding to the ERP-like functionality. A good example is the increasing availability of sourcing solutions from non-ERP PLM vendors. No matter how a PLM vendor positions its products (i.e., sourcing as a part of the PLM package or as a parallel offering alongside PLM), it makes perfect sense to increase the proximity between product definition information and sourcing. For ETO manufacturers, delivering high-quality products on time requires efficient sourcing, decision-making, and operations which rely on instant access to accurate product definition information and streamlined collaboration around it.
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