Variable in SSIS is basically used to store values. In SSIS, there are two types of variables system variable and user variable.
In SSIS, a container is a logical grouping of tasks, and it allows to manage the scope of a task together. Types of containers in SSIS are Sequence container For loop container Foreach loop container Task host container
Different types of connection that work within SSIS are ODBC OLEDB .net SQLClient Flat File Excel XML