Testimonials are a very important part of every landing page. It’s a great way to build trust, because no matter how great your sales copy is, it always works better when someone else recommends it.
You can have a dedicated section with testimonials somewhere on your page, but I’ve learned that testimonials work best when they are scattered across the entire page and are always positioned close to the call to action.
Try to add a short testimonial right below the call to action on your landing page. It can help to assure potential clients that they’re making the right choice.