Which file format is commonly used to share geospatial data in ArcGIS?

The use of Shapefile or GeoJSON for sharing geospatial data in ArcGIS is prevalent due to their compatibility with a wide range of GIS software and platforms, including ArcGIS.

Shapefiles consist of a collection of files (.shp, .shx, .dbf, etc.) that store vector data along with associated attribute information. This well-established format allows for the representation of geographic features such as points, lines, and polygons. It's widely supported in both desktop and web mapping applications, making it an industry standard for sharing spatial data.

GeoJSON, on the other hand, is a more modern format that encodes geographic data using JavaScript Object Notation (JSON). It is particularly favored for web applications due to its lightweight structure and ease of integration with web technologies. As GIS increasingly moves towards web-based solutions, the popularity of GeoJSON continues to rise.

Both Shapefiles and GeoJSON facilitate the sharing of complex geospatial datasets, making them suitable for various applications and analyses within the ArcGIS ecosystem, which is vital for users needing to collaborate or disseminate geographic information efficiently.