Hi Stefan,

So you're correct on subfolders - 1 dbt project with folders like models/finance/stg/x.sql or models/sales/intermediate/x.sql.

Sub projects is where you import dbt packages (other projects) and use models from them:

- You'd specify, in your packages.yml file, the package names (and versions if applicable). Example here

- You would install these packages via `dbt deps` which would then be stored in your `packages/` folder

- Each package is a dbt project in it's own right! You can specify the package name in your `ref` - e.g. {{ ref('other_package', 'model_name') }} if you want to be explicit about where the model comes from, more detail here

In short, the sub project approach would involve having multiple Git repositories, each with their own dbt project. More docs here