The objective of this chapter is to give a basic introduction to Product Lifecycle Management (PLM). Product Lifecycle Management is the business activity of managing, in the most effective way, a company’s products all the way across their lifecycles; from the very first idea for a product all the way through until it is retired and disposed of. PLM is the management system for a company’s products. It doesn’t just manage one of its products. It manages, in an integrated way, all of its parts and products, and the product portfolio. PLM manages the whole range, from individual part through individual product to the entire portfolio of products.