Since the early 2000s, there have been numerous attempts to create policies that create a conducive environment for first open access and later open science. These first started with declarations and conventions at a global level that were mainly voluntary. Later, regional bodies at the continental level and nations began developing specific policies to drive open science within their jurisdictions. Given the inextricable link between policy formulation and investment and adoption of open science and infrastructure, Invest in Open Infrastructure’s (IOI) 2024 Survey of Recent Open Science Policy Developments is an exploration into the dynamic landscape of open science policies across Africa, Europe, Latin America, and the United States. The report charts the evolution of open science policies over the past 20 years and analyses the implications of the policies for open infrastructure. The report references explicitly the unique contextual differences and similarities in the four continents covered in the report with the intent of surfacing the opportunities and challenges facing open infrastructure adoption.