Impressions are the amount of times a content has been viewed on Instagram. This is a metric only accessible through your Instagram Insights. And Instagram insights are only available to users who have a business account on Instagram. This service will increase the impressions on a post, which will be visible on your insights. Just like story views, this service is influencer oriented, and may be required to be seen by advertisers and sponsors. The amount of impressions is directly related to the size of your audience, so it is a clear metric showing how many people have seen your post, photo or video. This service is available to posts, including videos.