The concept
The soft descriptor is how your charge presents itself on the buyer's statement. It usually has few characters and is the only clue the person will have, weeks later, to remember what they bought.
When the descriptor shows a holding company's legal name, an acronym, or an intermediary's name, the buyer doesn't recognize it, assumes fraud, and calls the bank. That turns into a chargeback for an unrecognized transaction, which is the most common category and the easiest to avoid.
The fix is cheap: use the brand name the buyer saw on the sales page and, if it fits, a support phone number or domain.
How it shows up in practice
Your customers made the purchase and got the transaction receipt. A week later they are looking at their card statement and see a name they do not recognize. They assume fraud and call the bank. Weeks later you get a chargeback for unrecognized transaction, the most expensive category to avoid.
We see our customers as invited guests to a party, and we are the hosts. It is our job every day to make every important aspect of the customer experience a little bit better.
Use the brand name that appeared on your sales page. If the name is long, prioritize that instead of acronym or legal name. Add a phone or support domain when it fits. That fix eliminates the most common cause of voluntary dispute.