---
type: "term"
title: "Third-Party Trust Link (TTL)"
description: "Any reliance relationship where a third party can influence your domain."
resource: "tlctc:term:third-party-trust-link-ttl"
tags:
  - "glossary"
---
# Third-Party Trust Link (TTL)

Any reliance relationship where a third party can influence your domain. Examples: software components/libraries/dependencies, update/distribution channels, federation relationships (IdP/SP), managed control planes, SaaS admin consoles, signing/attestation/provenance chains, firmware/hardware supply chains, CI/CD pipeline integrations.

**Reference:** §4.2.2 (Global Definitions), §4.1 (#10 Definition)