Bill Chang is currently serving as Chief Executive Officer & Executive Director of the Data Centre Business Unit and also Singtel’s new standalone infrastructure unit, Digital InfraCo, as of 1 June 2023. Prior to that, Bill joined Singtel in November 2005 as Executive Vice President of Corporate Business and subsequently became Managing Director, Business Group. He became CEO, Group Enterprise on 16 July 2012 and assumed the role of CEO, Regional Data Centre Business and Digital InfraCo unit.

Bill is the Chairman of the Singapore Institute of Technology’s Board of Trustees and a board member of the Urban Redevelopment Authority of Singapore. He is also a member of the Australian Institute of Company Directors’ International Advisory Technology Governance and Innovations Panel. He co-chaired the Future Jobs and Skills Sub-committee of the Committee on the Future Economy of Singapore from 2016 to 2017.

Ahmad Fairus, holds a Bachelor of Accounting (Honours) degree from Multimedia University, Cyberjaya. He is a Chartered Global Management Accountant (CGMA) and a Fellow of the Chartered Institute of Management Accountants (FCMA). He has also completed executive leadership programs at INSEAD Business School, International Institute for Management Development (IMD), and the ICLIF Executive Education Center.

With over 20 years of experience delivering high-quality commercial finance and accounting support within the telecommunications industry, Ahmad Fairus brings a blend of financial expertise and strategic insight to his role. His extensive background encompasses long-term strategic planning, merger and acquisition and corporate restructuring, commercial partnership evaluations, and capital allocation to drive business growth. He first joined TM in 2001 and rejoined the company in 2018 as General Manager of Financial Planning and Analysis. Following this, he served as the Group Financial Controller before being promoted to Deputy GCFO in April 2024. He was appointed as the Group Chief Financial Officer of TM, effective 1 November 2024.

Ahmad Fairus also contributes as a board member across several TM subsidiaries.

Nik Azli, was appointed as the Group General Counsel effective 1 October 2022. He holds a Bachelor of Laws (Honours) from University of Newcastle Upon Tyne, United Kingdom. He has attained the Certificate of Legal Practice, Malaysia and was called to the High Court of Malaya as an Advocate and Solicitor.

Nik Azli has extensive experience as an in-house legal counsel, where he has been part of the leadership team of several prominent organisations. Prior to joining TM, Nik Azli held several pivotal positions at companies such as Sapura Energy Berhad and Malaysia Airlines Berhad with notable and commendable achievements.

Whilst practicing law, he was one of the advisers for several multinational companies in commercial transactions and energy and utility projects, including overseas transactions and projects spanning from China to the Middle East.

He was also one of the recipients of the Energy and Resources In-House Legal Team Award at the prestigious Asia Legal Business (ALB) Malaysia Law Awards in 2015. In 2023, he was recognised and enlisted in the Legal 500 GC Powerlist Malaysia 2023.

Ooi Seng Keat is the Vice President of Digital Infrastructure & Services at Singtel, reporting to Bill Chang, CEO of Digital Infraco. He oversees wholesale sales to licensed telecommunications providers worldwide and manages strategic partnerships with major hyperscalers, including Google, Facebook, Amazon and Microsoft.

In addition to leading submarine cable planning and operations, he oversees the management of cable stations and plays a key role in joint ventures related to marine operations that support international submarine cables. He is also responsible for procuring international network capacity to bolster Singtel’s global business.

Beyond submarine infrastructure, Seng Keat leads the engineering, planning, operations, product development, and sales of satellite capacity. His group generates approximately SGD 500 million in revenue, encompassing domestic and international telecommunications services, data center operations, and satellite services.

A graduate of Nanyang Technological University (NTU) in Singapore, Seng Keat has been with Singtel since 1990, contributing over three decades of expertise in the telecommunications industry.

Holds a Bachelor of Engineering (Hons) in Electrical & Electronic from Imperial College London and a Master of Science in Information Technology from Universiti Teknologi MARA (UiTM). He has completed executive leadership programs at Oxford University, the International Institute for Management Development (IMD), and Cranfield University.

With over 20 years of experience in IT operations, cloud services, and enterprise infrastructure, He has led end-to-end delivery of SAP ERP rollouts, enterprise architecture,  DC migrations, and large-scale cloud and analytics projects—bridging strategic foresight with operational excellence.

His past leadership roles include Vice President of Cloud Services at Credence (TM Digital Innovation Sdn Bhd) and Head of Professional Services at TM One, where he spearheaded major transformation initiatives across both public and private sectors. As Vice President of DC Business at TM, he played a pivotal role in expanding TM’s DC portfolio. 

Presently, the Chief Executive Officer (CEO) of TM Nxera, where he leads the build-out of a cutting-edge hyperscale DC in Iskandar Puteri, Johor.

Holds qualifications in Business Management and Data Analytics & Artificial Intelligence, complemented by an upcoming Executive MBA (mid-2026). 

Bringing over 25 years of extensive experience in the DC industry, he combines deep operational insight with a strategic mindset. His track record includes optimizing costs—such as revitalizing NTT’s resources following a carve-out—and driving growth in new markets, including building frameworks to support SME expansion. 

Having led teams across Singapore, Cambodia, and broader regional markets, he possesses a nuanced understanding of diverse business cultures. Fluent in three languages, he demonstrates adaptability and creativity, evident in his successful launch of ventures like MobileBus.

Presently, the Chief Operating Officer (COO) of TM Nxera, where he oversees multi-disciplinary teams across data center operations, facility management & quality assurance.

Holds a Bachelor of Engineering (Hons) in Electrical & Electronic Engineering from Nanyang Technological University.

With over 12 years of experience in enterprise ICT services, he has served multinational, regional and local corporations with a range of roles spanning Product Management, Bid Management, to Global Account and Sales Management. He has a strong track record in stakeholder engagement, executive client relationship building and executing effective sales strategies.

Presently, the Chief Commercial Officer (CCO) of TM Nxera, where he leads the commercial functions, including sales, marketing, partnerships and customer success. In this role, he is responsible for driving customer acquisition and revenue growth to meet the company’s strategic business goals.

A Chartered Accountant registered with the Malaysian Institute of Accountants (MIA), holding a Bachelor of Accounting (Honours) degree from the International Islamic University Malaysia (IIUM). 

Over 25 years of comprehensive experience in the field of finance, with a strong track record in strategic planning, mergers and acquisitions, corporate restructuring, and subsidiary management.

Presently, the Chief Financial Officer (CFO) of TM Nxera, where she oversees cross-functional teams across financial planning & analysis, budgeting, investment strategies, and compliance to support the company’s data center growth and operational excellence.