> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Meta Audience Metrics

> Track Meta audience reach and impressions in Upstack. Monitor reach, impressions, frequency, and CPM for your Facebook and Instagram campaigns.

Audience metrics measure how many people see your Meta ads and how often. Track reach, impressions, frequency, and cost efficiency of audience delivery.

<Info>
  **Data Source:** Meta Marketing API\
  **Metrics:** 4
</Info>

## Metrics in This Group

| Metric                                                                                 | Description                            | When to Use                             |
| -------------------------------------------------------------------------------------- | -------------------------------------- | --------------------------------------- |
| [Meta Impressions](/reference/metrics/advertising/meta/meta-audience/meta-impressions) | Number of times ads were shown         | Measure total ad exposure and scale     |
| [Meta Reach](/reference/metrics/advertising/meta/meta-audience/meta-reach)             | Unique people who saw your ads         | Measure audience size and penetration   |
| [Meta Frequency](/reference/metrics/advertising/meta/meta-audience/meta-frequency)     | Average times each person saw your ads | Detect ad fatigue and optimize delivery |
| [Meta CPM](/reference/metrics/advertising/meta/meta-audience/meta-cpm)                 | Cost per 1,000 impressions             | Evaluate delivery cost efficiency       |

## How These Metrics Relate

* **Impressions** counts every time your ad appears on screen
* **Reach** counts unique individuals, regardless of how many times they saw it
* **Frequency** = Impressions ÷ Reach — shows average views per person
* **CPM** = Spend ÷ Impressions × 1,000 — measures delivery cost efficiency

High frequency can signal ad fatigue, while low CPM indicates efficient reach.

## Choosing the Right Metric

* **Awareness campaigns**: Use Impressions and Reach to measure visibility
* **Ad fatigue detection**: Monitor Frequency—above 3-4 may indicate fatigue
* **Cost efficiency**: Compare CPM across campaigns to find efficient delivery
* **Audience expansion**: Track Reach growth to measure new audience acquisition