The present document constitutes the deliverable D9.4 “Guidelines for the digital architecture implementation in the industry” in the framework of the SPIRE project entitled “Optimization and performance improving in metal industry by digital technologies” (Project Acronym: INEVITABLE; Grant agreement no.: 869815). It is based on the project proposal form established in the Grant Agreement and signed by the European Commission and the project coordinator. The main objective of this deliverable is to describe the implementation of the cognitive system in the manufacturing facilities of EIPC and to provide guidelines for the implementation of a digital infrastructure in foundry companies and process industry in general.