How does utm_campaign work?
When you build a tracking URL, utm_campaign names the campaign so you can group all traffic from a single initiative together — regardless of which source or medium brought the visitor.
In this example, you could run the "summer_sale" campaign across Google, Facebook, and email simultaneously. The utm_source and utm_medium would differ for each channel, but the campaign name stays consistent, letting you see total campaign performance in one view.
How is utm_campaign different from other UTM parameters?
The UTM family works as a hierarchy. While utm_source tells you where and utm_medium tells you how, utm_campaign tells you why — the specific initiative or promotion behind the traffic.
- utm_term — narrows further to the paid keyword
- utm_content — differentiates between ad creatives or links within the same campaign
- utm_id — provides a unique ID for importing campaign cost data
Best practice: use lowercase, hyphen-separated names like spring-launch-2024 rather than spaces or mixed case, to keep your analytics reports clean.
utm_campaign and TTFB
Because utm_campaign values are unique per campaign and typically combined with utm_source and utm_medium, the number of distinct URLs hitting your server can grow significantly during active promotions. Without proper cache configuration, each unique combination triggers a fresh server response instead of serving from cache.
How is utm_campaign different from gclid?
gclid is auto-generated by Google Ads and contains an opaque identifier — you can't read campaign info from it directly. In contrast, utm_campaign is human-readable and manually set by you, making it useful across any platform, not just Google. Many marketers use both: gclid for Google Ads auto-tagging and UTM parameters for cross-platform reporting.
Test your site's performance with utm_campaign
Use the tool below to measure how the utm_campaign parameter affects your website's TTFB.
