Branding level - An org unit type within the organization; for example, Department. All courses descended from a branding-level are branded in the same way. A branding-level and its children are called a branding area.
Branding source - An org unit (typically a course offering, but not necessarily) whose active homepage, active navbar, colours, and tool statuses are copied out to other org units.
Branding destination - The org units (course offering) that are branded from a source.
Branding runs can have multiple sources and multiple destinations. A CSV file can define a source and destination for each line in the file. A full sweep may have one source for each branding area in the organization and apply its branding to thousands of destination courses.