Many businesses in East Africa sell through social media and messaging apps. A payment link lets them collect a fixed amount without building a website.
The key is control: the merchant sets the price, the link has an unguessable identifier, and it can be disabled or set to expire. Every payment made through the link is recorded against it, making reconciliation simple.
Pair links with QR codes for in-person sales and you have a complete, low-friction way to get paid.