Data visualization is the process of translating complex data into easily understandable visuals. Organizations generate large amounts of data that require effective communication to inform decisions. Data visualizations aim to communicate observations effectively, making them an essential skill for data professionals. Best practices include setting clear goals and objectives, choosing the right tools and visualization types, using succinct labels and titles, selecting appropriate colors, avoiding clutter, and ensuring clean and up-to-date data. Good data visualizations show complex connections in a clear and concise manner, are easy to understand, and effectively communicate information without unnecessary distractions. When judging a good data visualization, consider its use of color, readability, design elements, and the impact on the target audience. By following these best practices, organizations can create effective data visualizations that support informed decision-making.