The core activity of Payzee AG is to offer a digital platform for processing parking fees. Specifically, Payzee allows users to book and pay for parking spaces without installing an app by scanning a QR code, entering the license plate number, selecting the parking duration, and paying online. The company offers this service to both drivers and parking operators, with the latter incurring no costs for setting up or using the platform, but rather a percentage-based transaction fee for effective payments.