> For the complete documentation index, see [llms.txt](https://help.delpha.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.delpha.io/use-cases/ultimate-parent/how-selection-works.md).

# How selection works

Delpha selects the **commercial** parent — the group an account operates and goes to market under — not simply the last legal owner in a corporate registry. The legal chain is retained as evidence; passive or non-operating owners can be bypassed for commercial selection.

Three pages cover the mechanics:

* [**Ultimate Parent Concepts: Brands vs. Operating Structures**](/use-cases/ultimate-parent/how-selection-works/ultimate-parent-concepts-brands-vs.-operating-structures.md) — why brands and operating structures beat strict legal entities.
* [**How Delpha Selects the Ultimate Parent: The 10 Logic Protocols**](/use-cases/ultimate-parent/how-selection-works/how-delpha-selects-the-ultimate-parent-the-10-logic-protocols.md) — the ten ordered rules, first match wins, with worked examples and resulting field values.
* [**Understanding the Ultimate Parent Analysis**](/use-cases/ultimate-parent/how-selection-works/understanding-the-ultimate-parent-analysis.md) — the step-by-step analysis and how confidence is calculated.


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