John Stark is a leading expert, consultant and writer at the forefront of Product Lifecycle Management (PLM), the business activity of managing products across their lifecycles - from innovation, through definition, realisation and support to retirement. Stark's books propose concepts and approaches with which companies can address and improve their PLM performance. He draws on widespread experience gained working with more than a hundred companies in a range of industry sectors. His first book was published in 1986, his most recent in 2015. His book, "Product Lifecycle Management: 21st Century Paradigm for Product Realisation" is the most frequently cited publication about PLM. After a PhD from Imperial College, London and a CERN Fellowship, he has worked with companies in many industries including FMCG, pharma, fine chemical, aerospace, automotive, transportation, medical devices, machine tools, power generation and transmission, electronics, computer, watch, precision machines, connectors, etc.