Impressions vs views on X: on Twitter/X, the number labelled "views" under a post is an impression count. It records how many times the post was displayed on a screen, in a timeline, a search result, or on your profile. Separate video play counts exist for clips, but the figure most people glance at is that post-level view number, and that is the number impressions raise.
Launch tweets benefit most. When you announce a product, a release, a hire, or an event, the people you send to that tweet will see its view count straight away. A launch post that already shows activity looks like news; one stuck at a few dozen views looks like it fell flat.
Pinned tweets are the next obvious target. The pinned post is the first thing profile visitors read, often for months. Giving it a view count that matches the rest of your account keeps your profile looking current and well followed.
Threads are a third use case. The opening tweet of a thread does the heavy lifting, and a strong view count on it suggests the thread is worth expanding. Many customers boost the first post and let the rest of the thread follow naturally.
Impressions are social proof, not a promise of reach. They won't guarantee engagement or more distribution, but they help your best posts look like they've been seen, which makes a cold visitor more willing to read, reply, or follow.