Intra-group service provider
From ACT Wiki
Supply chain - suppliers.
A service provider that is part of a financial institution’s group and provides services to entities within this same group.
"Intra-group service providers may include a financial institution’s parent undertaking, sister companies, subsidiaries, service companies or other entities that are under common ownership or control.
Branches are not considered intra-group providers, as they are not separate legal entities from their head offices."
Enhancing Third-Party Risk Management and Oversight: A toolkit for financial institutions and financial authorities, Financial Stability Board, December 2023