SumUp is a company that provides point-of-sale (POS) solutions, including card readers, POS lite, self-service kiosks, tap-to-pay on iPhone, and POS Pro. The company also offers digital payment options such as online payments, QR codes, and invoices, differentiating itself with a comprehensive suite of payment solutions tailored for various business needs. SumUp primarily serves industries like food and drink, retail, large venues, and quick-service restaurants, aiming to streamline payment processes and enhance customer experience.