ArcGIS is a system that lets you easily author data, maps, globes, and models on the desktop and serve them out for use on a desktop, in a browser, or in the field via mobile devices, depending on the needs of your organization. Desktop GIS enables advanced spatial analysis, model operational processes, and visualize results on professional-quality maps.
This application allows for offline use of ArcGIS. If you are looking for ArcGIS Pro, please see the following link to sign in via myLSU and download Pro apps: https://grok.lsu.edu/article.aspx?articleid=20412
For additional info, please see Esri ArcGIS: LSU Overview