GRI standards are organized into a modular, interrelated structure. There are three universal standards that apply to all organizations: GRI 101 (Foundation), GRI 102 (General Disclosures), and GRI 103 (Management Approach). In addition to these, there are specific standards for different topics such as GRI 200 (Economic), GRI 300 (Environmental), and GRI 400 (Social). This structure allows organizations to tailor their reports to their particular operational contexts and stakeholder needs.