FormBuilder is a module for CDS Forms that adds User Interface functionality to manage JSON. FormBuilder defines a view of the Offer. This view includes such characteristics as a Template (layout for steps, layout for submit-step, layout for Listings), Steps information (number, title, fields, footer, etc.), fields information (label, type, values, default value, etc.), Disclaimer text, Upsell configuration.
Sometimes FormBuilder is being called OfferBuilder. But it can be a little bit confusing and cause misunderstanding.