What type of file is created when you save your project in ArcGIS Pro?

When you save your project in ArcGIS Pro, it creates a file with the .aprx extension. This file format is specifically designed for ArcGIS Pro, encapsulating the entire project including maps, layouts, tools, and connections to data sources in a structured manner. The .aprx file serves as the central hub for managing the various components of your GIS project, making it easy to reopen and continue your work at any time without losing your settings, customizations, or data connections.

The .map file format is associated with other versions of ArcGIS, such as ArcMap, and does not support the specific features and functionalities utilized in ArcGIS Pro. The .proj file is not a standard file type recognized by ArcGIS for saving projects, and while there are .gis files, they do not encompass the project structure that .aprx files provide. Therefore, the .aprx file is essential for maintaining the integrity and organization of your project in ArcGIS Pro.