Presentation by Dragana Becic, Assistant Director, Office for IT and e-Government, System for immunization management of the Republic of Serbia, at the 3rd and last seminar in the series, held on 1 April 2021, which puts the focus on moving towards seamless public service delivery. This 3rd event takes place in the framework of a series of three webinars organised by the SIGMA Programme, a joint initiative of the OECD and EU, principally financed by the EU, on the role of life events in end-to-end public service delivery.