An initial review and mapping of the SDG Indicators Global Database shows the availability of data necessary for global monitoring of the gender-specific indicators at a mere 26 per cent.' Data across time are even more limited: Only 17 per cent of the gender data needed to monitor change are currently available.2 This means that for many gender-specific indicators, country-level data are largely not available and, when they are, it is only for one point in time and so progress cannot be assessed. It argues for further gender mainstreaming throughout the framework—a point taken up with specific examples in Chapter 3, where existing evidence is used to bring to light the gender dimensions of all 17 goals. This chapter also argues for advancing data disaggregation to identify and monitor progress for groups that face multiple inequalities and deprivations—a theme that is further explored through in-depth case studies in Chapter 4.