Before leveraging the full potential of a Digital Twin, pharmaceutical companies must address foundational challenges like data silos, diverse data sources, and integration complexities. Phase 1 of implementing a Digital Twin focuses on establishing a Single Source of Truth (SSOT), a unified and authoritative repository that consolidates data from machines, processes, and facilities. In this customer story we describe the Edge Architecture implemented at PiSA Farmacéutica, one of the leading pharmaceutical manufacturers in Mexico.