The Compact Muon Solenoid (CMS) Collaboration at CERN has been a pioneer in the open data movement within high-energy physics. For over a decade, the CMS Open Data project has provided public access to high-quality, research-level particle physics data. This initiative is primarily driven by the goals of data and analysis preservation, ensuring that the valuable data collected by the CMS experiment remains accessible and usable for future generations of scientists and the public. The 10-year history of the CMS Open Data program spans from initial releases of Run 1 data in 2014 to the latest significant release of data from 2016. The CMS Open Data model provides not only data but also the necessary tools and knowledge for analysis. This initiative has a growing impact for researchers outside CMS, and the most recent releases offer new opportunities for engaging with collider physics.