Semrush is one of the world leaders in online marketing. This landing page was the result of a search for a keyword researching tool on Google.
You can see here that Semrush has identified my problem and served a landing page related directly to me, not offering their full suite of services.
In this example, we can see the proposition clearly. They've added a concise, attractive call to action that jumps out from the page’s background and a section that builds trust by displaying global brands they’ve worked with.
Notice how they’ve used a model on the right? We associate with other humans, this helps build trust, we assume she’s happy because she is using Semrush and by proxy, so will we.
The effective cherry on the cake here is the free trial, the last of several powerful marketing techniques being used to seal the deal before you even begin to scroll any further down the page.