CentOS Linux lacks some RHEL components, includes additional packages and capabilities, and is built and tested in a different environment. Getting ...
CentOS is a spin-off of RHEL. It is based on the same code base. It has recompiled all the source packages in it, making it effectively a very similar system.
CentOS is an open source project. Red Hat Enterprise Linux is an enterprise open source product with a defined life cycle and upgrade path. Overview · CentOS Stream vs. CentOS... · CentOS vs. RHEL · Is it going away?