Xerox Corporation is a large document management company that provides printers, copiers, and related services and supplies. It invented xerography and laser printing. While successful initially, Xerox struggled in the 1970s-1980s as competitors emerged and some key technologies developed by its PARC lab were not adopted. It has since refocused on services and solutions through initiatives like Lean Six Sigma. Today Xerox pursues innovation through customer partnerships and open innovation while managing projects using its Product Delivery Process.