Joining two collections in PowerApps

Adding this here cause I keep forgetting how do it.

Use cases:

1. Joining collections together without using too many ClearCollect and Collect
2. Adding data “Before” or “After” a Collection

Ungroup(
    Table(
        {Table: Table({Record: "ABC"})},
        {Table: Table({Record: "CDE"})}
    ),
    "Table"
)