The Open Source Science Initiative implements the ambitious, open science vision outlined in the NASA Science Mission Directorate’s “Strategy for Data Management and Computing for Groundbreaking Science 2019-2024.” OSSI includes the recently updated Scientific Information Policy (SPD-41a) that includes updated requirements, compliant with the recent OSTP memo on “ Ensuring Free, Immediate, and Equitable Access to Federally Funded Research”, for sharing data, publications, and software produced from SMD’s research activities. The Initiative further aims to increase accessibility, inclusion, and reproducibility in Earth and Space Sciences through a range of activities including training in open science, development of Open Science technologies, and grants to support Open Science. NASA’s Transform to Open Science, a program to train 20,000 scientists over the next 5 years in Open Science and broaden participation from historically excluded groups, kicked off with the Year of Open Science in 2023. NASA had provided over $6 million to sustaining and scientific software as well as to support innovate open science projects. The latest developments include a range of new infrastructure to support open science. This includes the Science Discovery Engine providing cross divisional data search and the Science Explorer, an expansion of the Astrophysics Data Service to include the other divisions in SMD. With the release of the core services strategy, SMD is laying out a path to enable groundbreaking science through cloud and high performance computing access and services.