Digital government is essential to transform government processes and services in ways that improve the responsiveness and reliability of the public sector. During the COVID-19 pandemic it also proved crucial to governments' ability to continue operating in times of crisis and provide timely services to citizens and businesses. Yet, for the digital transformation to be sustainable in the long term, it needs solid foundations, including adaptable governance arrangements, reliable and resilient digital public infrastructure, and a prospective approach to governing with emerging technologies such as artificial intelligence. This paper presents the main findings of the 2023 edition of the OECD Digital Government Index (DGI), which benchmarks the efforts made by governments to establish the foundations necessary for a coherent, human-centred digital transformation of the public sector. It comprises 155 data points from 33 member countries, 4 accession countries and 1 partner country collected in 2022, covering the period between 01 January 2020 and 31 October 2022.