This paper explores digital public infrastructure (DPI), defined as shared digital systems that are secure and interoperable and that can support the inclusive delivery of and access to public and private services across society. Governments play a pivotal role in designing, developing and managing DPI, as well as in leveraging DPI systems to increase efficiency and coherence in the implementation of digital government policies. Key components of DPI include digital identity, payments, data sharing, digital post, and core government data registries. Building robust DPI requires addressing governance challenges such as funding, public-private collaboration, and robust safeguards including for privacy and security. As DPI becomes a global priority, enhanced cross-border co-operation is also vital to address issues like resilience and to ensure effective DPI across diverse economic contexts.