Why?

Our code must be comprehensible, maintainable, and reusable, hence we have to abstract the domain selection logic (see reference) to a (reusable) hook.

What?

Currently, the domain selection logic is contained in the <FocusedLaunch/> component.
Here, several checks are executed to comply with all the variants (e.g. when available, select the plan from the checkout cart, initially) to select the proper domain.

Reference