RHEL 9 was the first to be based on CentOS Stream, itself based on Fedora Linux, while historically RHEL was based directly on Fedora Linux. The first beta for Red Hat Enterprise Linux 9 (Plow), based on Fedora Linux 34, was released on November 3, 2021. Red Hat Enterprise Linux 9 (Plow) was released on May 18, 2022.
Difference between RHEL 9 vs RHEL8 are as below
| Feature | RHEL 9 | RHEL 8 |
| Date of Release | 17th May 2022 | 7th May 2019 |
| Code Name | Plow | Ootpa |
| Kernel | Distributed with the kernel version 5.14 | Distributed with the kernel version 4.18 |
| Package Management | DNF, YUM | DNF, YUM |
| Supported architectures | AMD and Intel 64-bit architectures (x86-64-v2) The 64-bit ARM architecture (ARMv8.0-A) IBM Power Systems, Little Endian (POWER9) 64-bit IBM Z (z14) |
AMD and Intel 64-bit architectures The 64-bit ARM architecture IBM Power Systems, Little Endian IBM Z |
| Repositories | Red Hat Enterprise Linux 9 is distributed through two main repositories BaseOS AppStream |
Red Hat Enterprise Linux 8 is distributed through two main repositories BaseOS AppStream |
Mentor - Gandhar Bodas
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