Aliases (SQL Server Configuration Manager)
An alias is an alternate name that can be used to make a connection. The alias encapsulates the required elements of a connection string, and exposes them with a name chosen by the user. To create an alias for the Microsoft SQL Server clients on this computer, right-click Aliases in the console pane, and then click New Alias. To configure an existing alias for the SQL Server clients on this computer, click Aliases in the console pane, right-click the desired existing alias in the details pane, and then click Properties.