What Are Twitter Impressions?
To put it simply, your Twitter impressions show how many times people have seen your tweet. In other words, 500 impressions = your tweet has been viewed 500 times.
In particular, the metric of your Twitter impressions does not reflect how many eyes have seen your tweet through third-party platforms (e.g., Hootsuite or Sprout Social) or how many people have seen your tweet posted on a website.
But – of course, there is a but! – it doesn’t mean that 500 people have seen your tweet. It means that your tweet has been viewed 500 times, and that can even mean 100 have people seen your tweet, five times each.