The job execution engine has been extracted to the core framework as Generic Execution Engine and it is highly recommended to switch to it.
Following things need to be considered:
The old way of implementing custom job steps is deprecated. If you already have custom job steps implemented, you can
still use them for now, but it is recommended to migrate them to the new way. Please see the migration guide
here.
Use the Generic Execution Engine as soon as possible. To do so, also follow the migration guide here.