PCCW is headquartered in Hong Kong and maintains a presence in Europe, the Middle East, Africa, the Americas, mainland China and other parts of Asia.

PCCW shares are listed on Hong Kong Stock Exchange SEHK: 0008, and traded in the form of American Depositary Receipts on the Pink OTC Markets in the US (Ticker: PCCWY).

HKT Group Holdings Limited (HKT) was formed in 2008 to hold the telecommunications services, media and IT solutions businesses of the PCCW Group in a reorganization designed to improve the Group's operational efficiencies. As provider of Hong Kong's first quadruple-play experience, PCCW/HKT offers a range of media content and services across four platforms – fixed-line, broadband Internet, TV and mobile. PCCW is responsible for one of the world's largest commercial deployments of IPTV services under the now TV brand. In addition, the Group meets the telecommunications needs of the local and international business community, while supporting network operators with technical services and handling large-scale IT outsourcing projects for public and private sector organizations. Pacific Century Premium Developments Limited is principally engaged in the development and management of premium property and infrastructure projects, as well as investment in premium-grade buildings, in the Asia-Pacific region.

Product and services offered by PCCW include:

PCCW's businesses have a presence in the following countries:

PCCW announced the formation of wholly owned subsidiary CASCADE Limited in January 2003 and transferred almost a quarter of its total work force to Cascade. Cascade employs more than 3,000 staff as of June 2003. Cascade provides PCCW's telecommunications network operations with support and maintenance services. It provides also network infrastructure design, build-out and maintenance services, consulting solutions, customer installation and maintenance services, project management, operating systems development and maintenance and technical support to clients other than PCCW. Started from Dec 08, Cascade became a Subsidiary of PCCW-HKT Limited, which PCCW-HKT is still 100% owned by PCCW. The name of Cascade is removed from now on, become a part of HKT and named as "Engineering", a business unit of PCCW-HKT, simply like Commercial group of PCCW. All staff in Cascade had transferred to PCCW-HKT without changing.

PCCW Solutions is the information technology services and business process outsourcing (BPO) division of PCCW. Press releases prior to February 2006 refer to it by the name Unihub.. Unihib was a re-branding of PCCW's Business eSolutions division, from 1 September 2003.

Business eSolutions division formed a venture with China Telecom to provide IT solutions to major business organizations in 2002. This was in addition to PCCW's PCITC alliance with Sinopec, formed to serve Sinopec plus other players in China's petrochemical sector. The division also contributed to the new Hong Kong Identity Card system in 2003.

In early 2003, Business eSolutions entered a contract to provide services for Bank of China's credit-card back office processing system in China.[citation needed] It also extended a 2002 enterprise resource planning (ERP) project into more provinces for China Mobile and completed the flight information display system (FIDS) for Xiamen Airport, and a human resource management and financial management system for the Hong Kong Council of Social Service.[citation needed]

The PCCW foundation has provided sponsorship for local data network service for the Internet2 project initiated by the Joint Universities Computer Center (JUCC). The project enables staff and students at local universities to connect and exchange with Internet2 universities all over the world in researching the next generation of networking technologies.