Final answer:
Impressions are the number of times a digital ad has been seen.
Step-by-step explanation:
The number of times a digital ad has been seen is called impressions. Impressions refer to the total number of times your ad is displayed on a website or search engine results page. It is an important metric used in digital advertising to measure the reach and visibility of an ad campaign.
For example, if your ad is shown 100 times on a website, then the impressions for that ad would be 100. Higher impressions indicate that your ad is being exposed to a larger audience.
Impressions alone, however, do not guarantee that your ad was actually seen or noticed by users. Other metrics like click-through rate (CTR) and conversion rate provide additional insights into the effectiveness of your digital ad.