Late Arriving Dimension are unavoidable, to handle these we can create a dummy dimensions with natural/business key and keep the rest of the attributes as null or default. So when actual dimension arrives, the dummy dimension is updated with Type 1 change. This is also referred as Inferred Dimensions.
The important component in SSIS package are Data flow Control flow Package explorer Event handler
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