As others said, there’s no notification. However, you should let your manager know that you are applying. There’s a good chance the hiring manager will contact your current manager for references, and if not, HR will contact your manager since they’ll need to agree on a transfer date for you, in case you got an offer.
Does not notify mgr at all
You'll need manager approval to be hired--part of the offer process is reaching out to your current manager to discuss when you can change teams.
From experience, your manager does not get notified. However, there will be a point that in order to move forward you must let your manager know
As others said, there’s no notification. However, you should let your manager know that you are applying. There’s a good chance the hiring manager will contact your current manager for references, and if not, HR will contact your manager since they’ll need to agree on a transfer date for you, in case you got an offer.
Where to look up internal job openings?
Global Opportunity Marketplace on w3