Figma is where the design work happens, and more usefully it is where your team can watch it happen. No waiting a fortnight for a reveal, no feedback lost in an email thread.
We build a design system rather than a set of screens, so the pages we hand over and the pages your team builds later look like the same website. Prototypes are clickable, which means checkout flows get tested with real people before anything is built. That is considerably cheaper than finding the problem in production.