The Sustainability Report follows the G4 Global Reporting Initiative (GRI) guidelines (“Comprehensive” option) and forms part of Swisscom’s reporting. It addresses sustainability as a Swisscom Corporate Responsibility and contains information on the topics that are relevant for Swisscom and its stakeholder groups. This report is also based on the SDG Compass, i.e. the guide for implementing the Sustainable Development Goals (SDGs) of the United Nations (UN). In addition, Swisscom publishes a complete climate report in accordance with ISO 14064. Both reports are independently verified. Swisscom voluntarily chose the opt-in option and registered its Sustainability Report with SIX (Swiss Exchange Regulation). Fastweb, a Swisscom subsidiary, publishes its own Sustainability Report and follows the “Core” option in the GRI guidelines.