Designing SCADA Architectures for Scalability, Cybersecurity and Digital Resilience

Supervisory Control and Data Acquisition (SCADA) systems used in transmission and distribution substations and control centres have historically been designed with a strong focus on high availability, reliability, and real-time operational performance. In earlier generations, cybersecurity was not a primary concern, as SCADA environments were largely isolated, based on closed architectures, and relied on legacy serial communication protocols.