Evolution of PDM tools from the 1980s to late 1990s, starting with basic file management and access control, and advancing to more full-featured product data management applications. By the late 1990s, the complexity of solutions built with individual tools drove the desire for integrated PLM applications. PLM provides capabilities for CAD data management, product structure management, workflow, document management, change management, and extended enterprise connectivity to manage products and processes throughout their lifecycles and collaborate across organizations.