Average ad spend per session tracked by the Upstack pixel. Calculated as Channel Spend ÷ Sessions.
| Metric | Definition |
|---|
| Channel Spend | Total advertising spend across connected ad platforms |
| Unique Sessions | Count of distinct browsing sessions tracked by the Upstack pixel |
| Metadata | |
|---|
| Type | Currency |
| Data Source | Upstack Pixel, Ad Platforms |
| Aggregation | Ratio |
Example
Your store spent $5,000 on ads last week and generated 25,000 unique sessions:
| Channel | Spend | Sessions | Cost per Session |
|---|
| Meta | $3,000 | 15,000 | $0.20 |
| Google | $2,000 | 10,000 | $0.20 |
How It Works
Cost per Session divides your total advertising spend by the number of unique sessions captured by the Upstack pixel. Unlike Cost per Page View, this metric counts each visitor session once regardless of how many pages they view—giving you a cleaner measure of traffic acquisition cost.
When to Use
| Scenario | Action |
|---|
| Comparing channel efficiency | Identify which platforms deliver sessions most cost-effectively |
| Setting traffic acquisition budgets | Estimate spend needed to hit session volume targets |
| Evaluating campaign quality | Lower cost per session with strong engagement signals better campaigns |
| Benchmarking over time | Track acquisition efficiency trends across weeks and months |
| Metric | Relationship |
|---|
| Unique Sessions | Denominator—total session volume |
| Cost per Page View | Alternative cost metric at the page level |
| Session Conversion Rate | Measures how many sessions convert to purchases |
