What is the difference between a closed internal recruitment system and an open internal recruitment system?

The
difference between an open internal recruitment system and a closed internal recruitment system
is the transparency of the process whereby a company seeks to fill a vacancy from within. An
internal recruitment system is distinguished from an external system by the human resources
department's focus on promoting or transferring from within the organization. Both open and
closed internal recruitment systems focus on promoting or transferring from within, but an open
system is at least nominally inclusive of the entirety of a workforce. In a closed internal
recruitment system, there is no broad organization-wide announcement of an opening with an
invitation to all existing employees who meet specified requirements to apply. Human resources
or management seek to identify the best or preferred candidates for the open position in
question without making the workforce aware that such a process is underway, although most would
obviously be aware of an opening.

In theory, an open internal...