A user needs a dedicated private connection between a colocation facility and a VPC.
Which AWS service or feature should the user choose?
AWS VPN
AWS PrivateLink
AWS Direct Connect
AWS Client VPN
Explanations:
AWS VPN provides a secure connection over the internet, not a dedicated private connection.
AWS PrivateLink allows private connectivity to specific AWS services within a VPC, not a colocation.
AWS Direct Connect provides a dedicated private connection from a colocation facility to a VPC.
AWS Client VPN is used for remote access by end-users, not for connecting colocation facilities.
I reckon the answer is:
AWS Direct Connect