CentOS and Red Hat Enterprise Linux (RHEL) are both Linux-based operating systems that are used for servers and other enterprise systems. Both CentOS and RHEL are based on the same source code as the Red Hat Linux distribution, but there are some key differences between the two:
CentOS is a community-supported, freely available distribution of Red Hat Enterprise Linux. It is developed and maintained by volunteers and is not supported by Red Hat Inc.
RHEL is a commercial distribution of Linux developed and supported by Red Hat Inc. It is available for purchase and comes with support and maintenance from Red Hat.
CentOS and RHEL use the same package management system (RPM) and have similar package repositories, but the packages available in RHEL are generally more tested and stable than those in CentOS.
CentOS and RHEL use the same kernel and core system libraries, but RHEL includes additional proprietary software and tools that are not available in CentOS.
CentOS is generally used for test and development environments, while RHEL is used in production environments where stability and support are important.