Incoterms, or International Commercial Terms, are rules established by the International Chamber of Commerce that define the responsibilities and obligations of sellers and buyers in international trade. First introduced in 1936, they have evolved through multiple revisions, with the most recent being the 2010 update, which streamlined the terms from 13 to 11 and grouped them based on transportation modes. Key terms include Ex Works, Free Carrier, and Delivered Duty Paid, each outlining specific responsibilities for cost, risk, and delivery related to goods transport.