Simply put, there are a lot of moving parts.
This process requires a lot of data. In order for that data to work, it needs a framework or a structure to follow. This framework is known as a marketing taxonomy.
Think back to your days in the school library.
When you needed to find a book, you didn’t just roam the shelves hoping you would find what you needed. You used a system, more specifically the Dewey Decimal System, to find the specific title you were looking for.
The library would classify books into different sets in order to make them easier to find and access. Sometimes these categories would overlap, sometimes books could be filtered into different categories, but the system provided the structure necessary to make the library more efficient for everyone involved.