Professor Lau is an active member of the IEEE Computer Society. He pioneered the society's Distinguished Visitors Program for Asia/Pacific in 1993. He served on the society's board of governors in 1998, as a member-at-large of the Publications Board, and then as vice president for chapters activities in 1999. He was a member of the society's Technical Activities Board, in charge of Asian technical activities, and was a core member of the ACM-IEEE/CS Joint Task Force on Curriculum 2001. He received a Golden Core recognition in 1998 and an IEEE Third Millennium Medal in 2000 for outstanding achievements and contributions to the IEEE Computer Society.

In Hong Kong, Professor Lau has served as a member of the engineering panel of the Research Grant Council, a member of the vetting committee of the Innovation and Technology Fund, and a member of the Hong Kong Institution of Engineers' accreditation committee for computer science programmes.

Professor Lau's research interests include parallel and distributed computing, wireless networking, cluster and grid computing, cloud computing, pervasive computing, computer music, and Internet and the web. He has written many journal and conference papers, and is a co-author of two books. Professor Lau is the Editor-in-Chief of the Journal of Interconnection Networks (JOIN), and on the editorial boards of several international journals. Professor Lau has been invited to give keynote addresses in various international conferences.
2021年当选IEEE Fellow。