There are patterns hidden in your data. ArcGIS Online empowers you to reveal those patterns and explore new perspectives using maps. As the map author, you have options about how to present your data. To start mapping, open Map Viewer and browse the basemap gallery. ArcGIS Online includes a collection of basemaps that emphasize different views of our world. Administrators can also add custom basemaps, including basemaps in different projections, to their organization's gallery. You can add layers to your map from a variety of sources. Use your own data, bring in layers from the web, or access authoritative data from ArcGIS Living Atlas and from a global community of ArcGIS users. Once you've added data to the map, smart mapping defaults suggest the best way to represent it based on the data fields you choose. Different styles are available depending on the data and layer type. For example, you can style your data by location, by number, or by category. Try choosing two or more fields to explore other styles. Smart mapping styles make it easy to uncover and show comparisons, predominance, and other patterns in your data. Once you've chosen a map style, you can further customize the look and feel of your map with curated color ramps and symbol sets. Color ramps are sorted into collections like best for light backgrounds, best for dark backgrounds, and colorblind friendly. This helps you make smart cartographic decisions. You can also experiment with filters to get a focused view of your data. Create a filter to display only the data that matches the expression. This helps you highlight important and relevant locations. Pop-ups help make your maps engaging and informative. Enhance your pop-up with custom formatted text, charts, and other content to provide an interactive way to explore data. Once you map is complete, add it to your collection of ArcGIS Online items. Then you can share the map with your organization, with specific groups, or with the public. You can even use the map to make a web app. With ArcGIS Online, you can explore and harness the power of your data and create maps that tell stories and answer questions. To learn more about mapping in ArcGIS Online, visit the Resources page for product documentation, Discovery Paths, and more.