No - it's not the same as SysPrep.
It allows you to do a bunch of things, since this step is taking place in the "full Windows OS" (as opposed to Windows PE).
This step usually takes care of things such as:
- Joining your domain
- Updating / Installing software packages
- Installing an Ivanti agent permanently on the machine
- Restoring Profiles
- Configuring your corporate software stack
- Installing drivers
- Patching the new machine
- Updating Registry
... to name but a few.
The key differences are:
- Know *WHAT* you need to do *WHEN* (i.e. - "do i need to do this in Windows PE or in Windows proper" ?)
- Depending on that, you need to perform your provisioning actions at a different time.
Sysprep.exe is a whole separate topic.
Does that help with your question?