improve the writing: delivers a scalable operational and refurbishment framework, with especial focus on the retrofitting of legacy industrial equipment allowing them to gain the benefits of Industry 4.0. This is done through the implementation of modernisation actions for interoperability and deployment of a digital platform offering a wide range of capabilities for improving maintenance practices and dynamic utilisation of the equipment. The IIoT stack integrated with diagnostic & prognostics modules for PdM application plays an important role