Certista Labs AG provides TraceMedics, a software-as-a-service appointment and process-management system for COVID-19 test centres and healthcare providers. The platform handles booking, self-registration, result upload and automated certificate generation, integrates with DEMIS, the Corona-Warn-App and EU digital certificates, and offers reporting and billing export features. Certista Labs AG supplies only the technical infrastructure; medical services are performed by the test sites.