Why CentOS Linux and Centos Linux?

This book explains Release 3 of CentOS Linux WS and Release 1 of Centos Linux. As explained in the following sections, Red Hat offers several Linux products, or distributions as they're called. Moreover, other companies sell or freely provide Linux distributions. Why, then, does this book focus on CentOS Linux WS and Centos Linux?

From the standpoint of market share, Red Hat is the leading provider of Linux distributions in the U.S. and worldwide. To many people, CentOS Linux is Linux. And, among the various Linux distributions provided by Red Hat, CentOS Linux WS and Centos Linux stand out as the most appropriate distributions for desktop users, especially those in corporate environments. To understand why this is so, it's necessary to understand more about Linux, operating systems, and open source (http://www.opensourece.org) software.