The Innovation, Technology and Industry Bureau (“ITIB”) and the Cyberspace Administration of China (“CAC”) signed the “Memorandum of Understanding on Facilitating Cross-boundary Data Flow within the Guangdong-Hong Kong-Macao Greater Bay Area” (“the Memorandum”) in Beijing on 29 June 2023 to jointly promote cross-boundary data flow within the Greater Bay Area (“GBA”).

On 29 July 2008, the Mainland of China and Hong Kong signed the Supplement V to the Mainland and Hong Kong Closer Economic Partnership Arrangement ("CEPA"). Pilot Applications of Mutual Recognition of Electronic Signature Certificates Issued by Hong Kong and Guangdong ("Pilot Measure") is one of the facilitation measures proposed under the supplement and for early and pilot implementation in Guangdong Province as well.