The construction industry, which has been for long suffering from schedule and cost overruns, is witnessing a growing focus on lean and digitalization as means to overcome process inefficiencies. However, the application of such concepts and tools in the specialized Engineering, Procurement, and Construction (EPC) Oil and Gas industry is still immature and lacks thoroughness. This paper illustrates how digital transformation and lean concepts can complement each other to enhance the engineering review process in a typical Oil and Gas EPC project. Namely, this study illustrates a unified platform that merges the traditional engineering document review stages and brings the stakeholders together for concurrent and collaborative engineering to reduce the nonvalue-added time in the process of engineering drawings review and approval. The platform shall act as a framework for Oil and Gas companies, based on which they can develop a flexible system tailored to their specific needs and requirements.