Project templates help you create a project. A template includes several aspects of an ArcGIS project that are important to complete a specific task or achieve a specific goal. For example, a template can include connections to folders, databases, and servers; provide either complete datasets or schema-only data definitions; provide custom geoprocessing toolboxes; and deliver organizational standard layouts and styles to the teams who need them.
Some default templates are available on the ArcGIS Pro start page. Other templates are provided by various ArcGIS communities and organizations. You can create your own project templates and share them with others in your organization.
Project templates have the file extension .aptx. A project template is a special type of project package.