The Deep-time Digital Earth (DDE) is the first IUGS-recognized big science programme. DDE is committed to developing itself as a provider of public goods and services for science and technology development globally, in particular to assist countries to realize SDGs adopted by the UN in 2015. The overall mission of DDE is to harmonize global earth evolution data and share global geoscience knowledge. The long-term vision of DDE is to transform the earth sciences by encouraging a data-driven research paradigm. Currently, DDE has 23 Founding Members and 26 Working and Task Groups (WTGs).