Data visualization is the process of representing data in a visual and graphical format. It involves creating charts, graphs, maps, and other visual aids to help people better understand and analyze complex data sets. Data visualization helps to identify patterns, trends, and relationships that might not be easily discernible from raw data. It is widely used in various fields such as business, finance, healthcare, and science to communicate complex information to decision-makers, stakeholders, and the general public. Effective data visualization is crucial for making informed decisions based on data-driven insights.