Instapage is a landing-page and post-click optimisation platform aimed at advertisers. You build campaign-specific pages in a drag-and-drop editor, then use experimentation and analytics to raise the conversion rate of traffic you're already paying for.
What sets it apart from general builders is the ad-centric tooling: AdMap visualises the relationship between your ads and their destination pages, personalisation serves different content by audience, and heatmaps show how visitors actually behave on the page. Instablocks let you save and reuse page sections across dozens of pages, which is what makes running many near-identical campaign pages practical.