Seaborn is a powerful Python data visualization library based on Matplotlib. It provides a high-level interface for creating attractive and informative statistical graphics. With built-in themes and color palettes, Seaborn makes it easy to produce visually appealing plots that enhance data analysis. The library supports various types of visualizations, including scatter plots, bar plots, and heatmaps. It is particularly useful for visualizing complex datasets and relationships between variables. By simplifying the process of creating advanced visualizations, Seaborn helps users gain insights from their data more effectively.