A linked server configuration enables SQL Server to execute commands against OLE DB data sources on remote servers. Linked Servers is a concept in SQL Server by which we can add other SQL Server to a Group and query both the SQL Server dbs using T‐SQL Statements.
Linked servers offer the following advantages:
1.Remote server access.
2.The ability to issue distributed queries, updates, commands, and transactions on heterogeneous data sources across the enterprise.
3.The ability to address diverse data sources similarly.
With a linked server, you can create very clean, easy to follow, SQL statements that allow remote data to be retrieved, joined and combined with local data. Stored Procedure sp_addlinkedserver, sp_addlinkedsrvlogin will be used add new Linked Server.