Generally, a static IP address is assigned by request and for a fee by an IT administrator at work, or by you at home. 1  Businesses are better suited for it than residences. 2  It's also better for dedicated services such as mail, FTP and VPN servers.  It's good for creating or hosting computer servers.
ArcMap, the central application and main component of Esriâs ArcGIS suite of geospatial processing programs, represents geographic information as a collection of layers in a map and is used primarily to view, edit, create, and analyze geospatial data.
But if you are someone new to ArcGIS Desktop then ArcMap is the best option for you to understand the workflows and the tools to use,once you can perform all the basic tasks you can migrate to ArcGIS Pro.