A domain is the name people use to find your business online, like yourbusiness.co.za. It points people to your website and gives your business email its proper address.
If your domain is unclear, expired, badly managed or owned through somebody else’s account, your website and email can become fragile. That is not a technical detail. That is business risk wearing a tiny hat.
Know who registered the domain, which email owns the account, where DNS is managed, when renewal happens and who has access if something breaks.
The business owns or controls the domain, access is documented, renewal is visible, and DNS changes can be made without phoning an ex-designer from 2017.
Start with the quiz. It keeps the decision practical: what is missing, what is leaking attention, and what should be fixed before anything else gets added.