This chapter provides an overview of e-participation, tracing its evolution from early public involvement initiatives to its current integration with digital technologies. It provides examples of implementations and highlights both the potential and challenges of e-participation practices and platforms. The cases are used to discuss the strategic importance of e-participation in enhancing transparency, legitimacy, and trust in public governance, pointing out the role of digital technologies in broadening the scope and depth of public engagement, transforming traditional models and fostering more direct and meaningful interactions between citizens and governments. Ultimately, it explores open challenges in need to be addressed.