They are kernel objects that allow multiple groups of processes to be treated and managed as a single unit. Jobs can be protected, shared, and named, with any changes made to one job affecting all processes within it.

References:

• https://learn.microsoft.com/en-us/windows/win32/procthread/job-objects

• https://slideplayer.com/slide/7987295/

• https://learn.microsoft.com/en-us/sysinternals/resources/windows-internals

Job object