# Profile Resolution

Profile Resolution is the first layer of Identity Resolution. It deduplicates profile-like records, assigns a stable resolved profile key, and creates a canonical profile spine that can be reused across DinMo.

The output of Profile Resolution is centered on [`dinmo_id`](/identity-resolution/dinmo-id.md), the resolved profile ID.

## What Profile Resolution does

Profile Resolution:

* reads profile-like source models, such as CRM contacts, ecommerce customers, app users, subscribers, or support contacts
* standardizes configured [identifiers and matching rules](/identity-resolution/matching-rules.md)
* groups records that refer to the same real-world customer or entity
* creates a [golden record](/identity-resolution/golden-record.md) with one row per `dinmo_id`

For a step-by-step setup guide, see [Create your first Profile Resolution project](/identity-resolution/get-started.md).

## What Profile Resolution does not do

Profile Resolution does not attach every warehouse table to a profile. Event, transaction, session, support ticket, and product usage tables should usually be attached later through [Event Stitching](/identity-resolution/event-stitching.md).

It also does not replace data modeling. Source models still need stable primary keys, useful identifiers, and fields that can support review and downstream use.

## Main outputs

| Output                              | Use it for                                                  |
| ----------------------------------- | ----------------------------------------------------------- |
| `identity_golden`                   | Consume one row per resolved profile.                       |
| `identity_matched_ids`              | Inspect which identifiers belong to each resolved profile.  |
| `identity_unresolved_records`       | Investigate records excluded by missing data or guardrails. |
| `identity_lookup` and `match_pairs` | Audit how records entered and matched in the graph.         |

See [Output tables](/identity-resolution/output-tables.md) for the full table reference and [Review and monitor](/identity-resolution/review-and-monitor.md) for validation guidance.

## When to use Profile Resolution

Use Profile Resolution when you need to:

* deduplicate customer or user records
* create a trusted profile spine for Customer Hub, Segments, Activations, analytics, or downstream models
* build a golden record from multiple source systems
* make identity decisions explainable through rules, audit tables, and monitoring

For the deduplication mechanics, see [How customer deduplication works](/identity-resolution/customer-deduplication.md).


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