Carrd is an ultra-simple one-page website builder that's become the go-to tool for quick landing pages, waitlist sign-ups, and link-in-bio pages. At just $19/year for the standard plan, it's one of the most affordable ways to get a professional landing page live with a custom domain. GTM teams use it for campaign-specific pages, product launch waitlists, and simple lead capture forms. While it lacks an API and advanced features, its speed and simplicity make it perfect for rapid experimentation.