What is a stand-alone table used for in ArcGIS Pro?

A stand-alone table in ArcGIS Pro serves the purpose of storing nonspatial data that can be utilized for joins. This means it contains data that doesn't have a geographic component but can be associated with spatial data through common attributes. For example, a stand-alone table may contain demographic information about geographic regions which can aid in enriching spatial datasets with additional context.

This type of table allows users to perform relational database operations such as joining the table to feature classes or shapefiles based on a shared field (like a unique identifier). This capability enhances the analysis by allowing more comprehensive insights drawn from both spatial and nonspatial data.

The other options describe functionalities that do not align with the purpose of a stand-alone table. Storing spatial data refers to feature classes or shapefiles, which inherently contain geometric information. Creating 3D models typically involves 3D feature layers or scenes, not stand-alone tables. Editing maps focuses on modifying the visual representation of spatial data within a map, which does not pertain to the role of a stand-alone table in data management and analysis within ArcGIS Pro.