---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/sendgrid/glossary/ad-impression#article
headline: Ad impression
description: "*Advertising*. One occurence of an advertisement displaying on a screen."
url: https://www.twilio.com/docs/sendgrid/glossary/ad-impression
inLanguage: en
dateModified: 2025-11-07T21:55:06.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# Ad impression

*Advertising*. One occurence of an advertisement displaying on a screen.

This serves as one of the metrics that determines the effectiveness of an advertisement or of the website in which the ad appears. Ad impressions provide the number of times a given ad appears before an audience. A second metric would be whether ad viewers click on the ad.