What Tealium iQ is
iQ is an enterprise tag management system: it loads and orchestrates tags, reads a standardized data layer, applies load rules, transforms data through extensions, and publishes through versioned environments. Compared to lightweight tag managers, its center of gravity is governance - profiles per property, granular publish workflows, and a data layer contract shared with the rest of the Customer Data Hub.
The pieces, and how they fit
| Piece | What it does | Where estates go wrong |
|---|---|---|
| Data layer | The universal data object every tag reads | Improvised per page; never specified or versioned |
| Load rules | Decide when and where tags fire | Accumulate untested conditions nobody dares touch |
| Extensions | Transform and enrich data before tags consume it | Business logic hidden in JavaScript with no owner |
| Environments | Dev / QA / prod publish targets | Everything published straight to prod |
| Profiles | Separate configurations per property or brand | One profile carrying every brand's exceptions |
Governance practices that keep iQ clean
- Naming standards for tags, load rules, extensions, and variables - enforced in review, not documented and ignored.
- Versioned publishes with change notes, tied to a release calendar.
- Quarterly runtime audits - what actually fires, compared against what the profile claims.
- A deletion policy: every tag has an owner and an expiry review; the default fate of an unowned tag is removal.
When iQ alone is not enough
iQ moves data from the browser to vendors. When browser collection stops being durable - tracking restrictions, cookie loss, consent gating - the estate needs EventStream server-side collection; when the goal is stitched customer profiles and audiences, that is AudienceStream. The good news: an iQ estate built on a clean data layer extends into both without rework.