Data visualization is crucial in business for several reasons. Firstly, it enhances decision-making by providing a clear and concise summary of data, allowing stakeholders to make informed decisions quickly. Secondly, it helps in identifying trends and patterns that would be difficult to discern from raw data. Thirdly, it aids in communicating insights effectively to a broader audience, including those who may not have a technical background. Finally, it supports data analysis by providing tools to explore and interpret data interactively.