“Leaving no one behind (LNOB)” is the central promise of the 2030 Agenda for Sustainable Development that aims to tackle rising inequality of opportunity (access to key dimensions necessary for decent quality of life), combat discrimination, and ensure inclusive growth. The role of disaggregated and granular data is key to design programs and policies fostering inclusive growth. DPA-led intersectional LNOB assessments focus on understanding and identifying the exclusion and discrimination factors and mechanisms through 1) mapping and quantifying structural drivers of exclusion, 2) identifying the most vulnerable populations and groups in a given context, 3) presenting data and evidence-driven recommendations to tackle the root causes of exclusion, inequality and discrimination.