SQL Server Management Studio (SSMS) is Microsoft’s primary GUI for connecting to and managing SQL Server and related Azure SQL services, combining Object Explorer, administrative dialogs, and a full-featured query editor. Practitioners use SSMS to run and tune queries, script repeatable changes, perform maintenance tasks like backup/restore, and monitor live workloads. A useful mental model is that most UI actions either generate T-SQL behind the scenes or act as a front-end over engine features (plans, Query Store, Agent, Extended Events). Keep your work reproducible by leaning on scripting features (Generate Scripts, templates, solutions/projects) and by understanding the editor/connection options that change execution and results behavior.