Power BI developers foster self-service BI adoption by creating certified datasets and templates that business users can build upon. They provide training sessions to teach stakeholders the basics of data modeling, DAX, and visualization. Power BI developer design intuitive dashboards that inspire users to explore and customize reports. They ensure data governance by implementing role-level security and monitoring to prevent misuse. Reusable components and clear documentation make the self-service experience seamless. By empowering users with tools and knowledge while maintaining oversight, developers promote a culture of self-reliance and data-driven decision-making across organizations.