This presentation offers a practical case study in applying international best practices to digital assessment. It details how a large-scale assessment agency and its technology partner implemented a Professional Learning Program (PLP) to integrate the ITC/ATP Guidelines for Technology-Based Assessment into their operations—ensuring validity, fairness, accessibility and security. Attendees will gain insight into how structured learning sessions fostered collaboration, built internal capacity, and supported staff through digital transformation. The session will highlight how the PLP informed improvements in psychometric rigor, user experience, and data lifecycle management, while laying the foundation for innovations such as generative AI in test development. For professionals seeking to modernize their own assessment systems, this session provides a roadmap for aligning professional learning with global standards to drive innovation and enhance assessment quality at scale.