This IDC White Paper takes an in-depth look at the use of Linux as a commercial solution in business-critical environments. It offers a deeper review of SUSE Linux Enterprise (SLE) and HP's portfolio of standards-based server solutions and how the collaboration between these two major industry players lowers the barriers for adoption among existing customers and among potential new customers. Included in this paper are two customer case studies that illustrate the deployment of business-critical solutions aboard Linux.