Open access publishing is based on the principle that peer-reviewed scholarly literature should be freely available to everyone, without financial, legal, or technical barriers. In line with the internationally recognized definitions established by the Budapest, Berlin, and Bethesda declarations, open access ensures that research articles are made available online immediately upon publication, with no embargo period or subscription requirements. Under open access, published materials—such as articles, data, and supplementary content—can be accessed, downloaded, and shared freely by anyone, anywhere in the world. Readers are not required to pay for access, and content can be linked from external platforms, indexed by search engines, and reused in educational resources, academic blogs, or text mining tools. This fosters wider dissemination of knowledge and enhances the global reach of scientific research. Open access supports the advancement of interdisciplinary research by breaking down access barriers and encouraging collaboration across diverse scientific and academic communities. It plays a key role in making research findings available to institutions and researchers in developing countries, as well as to independent scholars and the interested public who may not have access to subscription-based resources. While open access provides broad reuse rights, it is important to note that some published materials—particularly figures, tables, or content reproduced from third-party sources—may be subject to separate copyright restrictions. Users must seek appropriate permissions when intending to reuse such content beyond what is permitted by standard academic practices. Overall, open access publishing increases the visibility, accessibility, and potential impact of scholarly work. It allows research to be more easily discovered, shared, and cited, contributing to the rapid exchange of knowledge and the advancement of science and innovation on a global scale.