Chapter 4. Application Streams

Multiple versions of user-space components are delivered as Application Streams and updated more frequently than the core operating system packages. This provides greater flexibility to customize RHEL without impacting the underlying stability of the platform or specific deployments.

Application Streams are available in the familiar RPM format, as an extension to the RPM format called modules, as Software Collections, or as Flatpaks.

Each Application Stream component has a given life cycle, either the same as RHEL 9 or shorter.

RHEL 9 improves the Application Streams experience by providing initial Application Stream versions that can be installed as RPM packages using the traditional yum install command.

Some additional Application Stream versions will be distributed as modules with a shorter life cycle in future minor RHEL 9 releases.

Content that needs rapid updating, such as alternate compilers and container tools, is available in rolling streams that will not provide alternative versions in parallel. Rolling streams can be packaged as RPMs or modules.

Note

Application Streams versions and formats distributed in RHEL 9.0 Beta might differ from versions and formats provided at the time of general availability of RHEL 9.0.

Additional resources