The document discusses how open source software can meet the needs of enterprise businesses. It provides two case studies of companies that successfully used open source solutions instead of expensive commercial alternatives. Knowledge Tree used the open source document management system Alfresco instead of Documentum, saving hundreds of thousands of baht. SugarCRM was used to create a customer portfolio system for far less cost than commercial options. Both cases illustrate how open source software provided stability, long term support, and scalability for the companies' needs.