Hong Kong Education City (EdCity) aims to promote the development of digital education by actively expanding relevant services and providing comprehensive professional support for teachers. EdCity integrates a diverse range of high-quality teaching resources and has launched the new “Digital Education Teacher Professional Development” series: EdAcademy. This series covers five topics: Artificial Intelligence, Cybersecurity, Big Data, Cloud Computing, and Digital Literacy, encompassing five key applications: Teaching, Learning, Assessment, Research, and Administration.