The metaphor of the funnel is used because people drop away at each stage of a long sales process: for example, many of your unqualified prospects may have existing suppliers with whom they're very satisfied. Others may have needs which other competitors are better-placed to satisfy. Still, others may love your products, but not have the budget to buy them.
Like many of the other landing pages in this post, Shopify's trial landing page keeps it simple. The user-oriented headline is just a few words, for example, and the page relies on simple bullets, not paragraphs, to communicate the trial's details and benefits. There are only a few fields you need to fill out before you get started. All of this makes it easier for you to get to the point: selling online with their tool.
Open-ended experimentation. This approach is similar to closed-ended experimentation except that more variations will be added for testing and experimentation will not stop when a winner is found. This method is used by large corporation to dynamically improve their conversion rates and improve user experience. Landing page can also be adjusted dynamically as the experiment results change to further enhance user experience.