What Is an Impression?

An impression counts an appearance of content on a surface that measures it. In Google Ads, for example, an impression is recorded when an advertisement is shown. One person can generate several impressions by seeing the same content repeatedly, so impressions do not equal unique people or reach.

Impressions, Reach, and Clicks

• Impressions: how many times content was displayed
• Reach: how many unique accounts or users could see it, under the platform's method
• Clicks: how many times an element was clicked
• CTR: clicks divided by impressions within the same scope

A short link usually cannot know how many times it appeared on Instagram, WhatsApp, email, a poster, or another channel. The link dashboard begins measuring when the address is opened. Impression data must come from the platform presenting the content or a measurement system on that media.

Avoiding Misinterpretation

1. Use the same period for impressions and clicks
2. Do not combine channel impressions without context
3. Check whether the platform measures viewability or only loading
4. Separate paid and organic impressions
5. Review frequency to avoid excessive repetition
6. Connect the result with conversions instead of stopping at exposure

For an s.id campaign, use impression data from the distribution channel and click data from link analytics. Combine them only when the link, creative, period, and metric definitions match.

Reference

• Google Ads Help: Impressions definition