What ST Telemedia does

ST Telemedia is a Singapore-headquartered strategic investment firm, wholly owned by Temasek Holdings, that specialises in building and scaling platform companies across three verticals: Communications, Data Centres, and Infrastructure Technology. Founded in 1994, the company operates as a holding entity with a portfolio spanning telecom operators (StarHub, U Mobile, TeleChoice, Lao Telecommunications), data centre platforms (historically STT GDC and its subsidiaries VIRTUS Data Centres and GDS Services in China), and infrastructure technology businesses (Armor for cybersecurity, Ollion and Bespin Global for cloud consulting, Datameer for big data analytics, and Greenwave Systems for IoT).

Through February 2026, ST Telemedia's flagship asset was STT GDC, a carrier-neutral data centre platform operating 170+ facilities with 2.3GW design capacity across Singapore, UK, India, China, Thailand, South Korea, Indonesia, Japan, and the Philippines. The company expanded its data centre footprint primarily through joint ventures with local partners (Tata Communications in India, Globe/Ayala in Philippines, Triputra/Temasek in Indonesia, Goodman in Japan) and strategic acquisitions including VIRTUS Data Centres, Tata Communications' India/Singapore data centre business, and GDS Services in China. In February 2026, ST Telemedia fully divested STT GDC to a KKR-led consortium with Singtel at a S$13.8 billion enterprise value, following a S$1.75 billion preference share investment from the same consortium in June 2024.

Post-divestiture, ST Telemedia retains telecom holdings (StarHub, U Mobile at 49%, TeleChoice, Lao Telecommunications), majority stakes in cloud and cybersecurity firms (Armor, Ollion), and minority positions in GDS, Datameer, Greenwave, and Lao Telecommunications. Revenue model relies on capital appreciation, dividend distributions from portfolio companies, and strategic exits; data centre services (via STT GDC) historically generated recurring colocation revenue based on power capacity (MW), floor space (sqm), and connectivity services under multi-year enterprise contracts. The firm employs 51-100 staff at the parent level and operates across 15 countries through portfolio investments.

Name

ST Telemedia

Legal name

Singapore Technologies Telemedia Pte Ltd

Website

https://sttelemedia.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

51–100 employees

Short description

ST Telemedia is a Singapore-headquartered strategic investor owned by Temasek Holdings, building and scaling platform companies across Communications, Data Centres, and Infrastructure Technology globally.

Ownership category

akta.pro rank

Headquarters

HQ city

Singapore

HQ country

Singapore

HQ region

Asia

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Investment Returns and Portfolio Company Distributions: ST Telemedia generates returns through strategic investments in portfolio companies across data centres, telecommunications, and technology infrastructure. The company sells down stakes in portfolio companies (e.g., KKR/Singtel acquiring 82% of STT GDC for S$6.6 billion) while retaining minority positions and generating capital appreciation.
2. Dividend and Capital Distributions from Portfolio Companies: ST Telemedia receives dividend distributions from operating portfolio companies including StarHub, U Mobile, TeleChoice, and others that generate recurring telecommunications and data centre revenues.
3. STT GDC Colocation and Data Centre Services: STT GDC provides colocation, connectivity, and managed services to hyperscale customers, enterprises, and cloud providers. Revenue is generated through recurring colocation fees based on power capacity (MW) and space (sqm), plus connectivity services.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

ST Telemedia is a strategic investment holding company that invests in, builds, and operates a portfolio of digital infrastructure and communications businesses across three core verticals: Communications (mobile and fixed-line telecom operators), Data Centres (carrier-neutral colocation and managed services), and Infrastructure Technology (cybersecurity, cloud consulting, big data analytics, IoT). The company deploys long-term patient capital and operating expertise to build market-leading platforms, primarily through controlling or significant minority stakes in operating subsidiaries across 15 countries.

Product overview

ST Telemedia is a Singapore-headquartered strategic investor specialising in Communications, Data Centres, and Infrastructure Technology businesses globally. Rather than offering a single unified product, ST Telemedia operates as a holding company with a portfolio of distinct portfolio companies across three core business segments: Communications (telecom operators like StarHub, U Mobile, Lao Telecommunications, TeleChoice), Data Centres (STT GDC and its subsidiaries VIRTUS Data Centres, GDS Services), and Infrastructure Technology (cybersecurity firm Armor, cloud consultancies Ollion and Bespin Global, big data analytics company Datameer, IoT platform Greenwave). These portfolio companies operate independently while benefiting from ST Telemedia's strategic guidance and cross-portfolio synergies. STT GDC itself operates over 170 data centre facilities globally with 2.3GW+ IT load capacity.

Differentiator

Problem solved

Functional benefit

Products and services

• ST Telemedia Global Data Centres (STT GDC) Core data centre platform operating 170+ carrier-neutral colocation facilities across Singapore, UK, India, China, Thailand, South Korea, Indonesia, Japan, Philippines, Malaysia, and Vietnam with combined IT load capacity exceeding 2.3GW. Provides colocation, connectivity, and managed services to hyperscale cloud providers, enterprises, and telecom operators.
• StarHub Singapore telecommunications company providing mobile, broadband, TV, and enterprise digital services. Ranked 187th in Fortune Southeast Asia 500. Recognised as Singapore's Most Awarded Network in Opensignal 2024 and World's Most Sustainable Wireless Telecom Provider in Corporate Knights Global 100.
• U Mobile Malaysian mobile telecommunications operator, fourth-largest mobile operator in Malaysia, providing 3G/4G/5G mobile services and broadband. ST Telemedia holds 49% stake through wholly-owned subsidiary Straits Mobile Investments.
• VIRTUS Data Centres UK and continental Europe data centre operator and part of STT GDC Group. Operates 11+ hyperscale and mission-critical data centres in Greater London with expansion into continental Europe via the Berlin campus (VIRTUS BERLIN1) operational 2026.
• GDS Services Leading Chinese data centre operator with 17+ high-availability carrier-neutral facilities across Beijing, Shanghai, Chengdu, Shenzhen, and Hong Kong. Serves major national and international financial institutions, large enterprises, government agencies, and top-tier internet companies. ST Telemedia holds approximately 40% stake.
• TeleChoice International Telecommunications solutions provider offering equipment distribution, consumer and enterprise telecommunications services, and wireless network engineering across Singapore, Malaysia, Indonesia, and Australia. Wholly-owned subsidiary of ST Telemedia.
• Ollion Cloud-native consultancy formed by the merger of 2nd Watch, Aptitive, Cloud Comrade, and CloudCover with nearly 600 employees globally. Provides digital transformation services with AWS, Microsoft Azure, Google Cloud Platform, and Snowflake partnerships.
• Bespin Global Cloud computing consultancy focused on building and implementing bespoke technology solutions on AWS, GCP, and Microsoft Azure Premier Partner platforms. Recognised as 2023 AWS Global MSP Partner of the Year.
• Armor Cybersecurity company providing managed security platform for public and hybrid cloud environments with 24/7/365 protection, detection, and response. Helps customers adhere to PCI, HIPAA/HITRUST, SOC, and ISO compliance requirements.
• Datameer Big data analytics and visualisation company providing a spreadsheet interface for running analytics against large data sets using Hadoop without programming requirements.
• Greenwave Systems Internet of Things (IoT) software and managed services provider offering the AXON platform for managed services including home automation, connected lighting, and energy management.
• Lao Telecommunications Company Telecommunications company operating mobile and fixed-line services in Laos.

Quantifiable outcome

• STT GDC carbon intensity decreased 12% year on year; PUE improved 4%; WUE improved 18% versus 2020
• +2 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Nine partnerships are on record, tiered supporting and core.

• AWSsupportingTechnology or Integration · 25 June 2025Bespin Global (STT portfolio company) is an AWS Premier Partner and 2023 AWS Global MSP Partner of the Year providing cloud migration and management services.
• Alibaba CloudsupportingTechnology or Integration · 25 June 2025Bespin Global Indonesia partnered with Alibaba Cloud to become official Managed Service Provider in Indonesia, accelerating AI-driven innovation and cloud adoption.
• Tata Communications (JV Operations)coreStrategic or Co-development Partner · 5 June 2025STT GDC India joint venture with Tata Communications operates 30 data centres across 10 Indian cities. Tata Communications activated emergency measures following Delhi data centre fire incident, with recovery unit Novamesh assisting efforts.
• B.Grimm PowersupportingStrategic or Co-development Partner · 1 January 2024STT GDC Thailand signed MoU with B.Grimm Power to develop low-carbon energy solutions for data centre sector, enhancing alternative power competitiveness and exploring renewable energy procurement.
• Goodman GroupsupportingStrategic or Co-development Partner · 18 May 2023STT GDC partnered with Goodman Group to develop two data centres in Tokyo, Japan. Goodman developing shell and core of 60,000 sqm facilities in Goodman Business Park, Inzai City, with STT GDC fit-out and operations. 60MW development potential.
• Globe TelecomcoreStrategic or Co-development Partner · 2 March 2022STT GDC formed $350 million JV with Globe Telecom and Ayala Corporation for data centre development in Philippines. Globe owns 50%, STT GDC 40%, Ayala 10%. KarmanEdge subsidiary houses carved-out data centre business with potential to expand by 100MW capacity.
• Ayala CorporationcoreStrategic or Co-development Partner · 2 March 2022Ayala Corporation joined STT GDC and Globe for $350 million JV to develop data centre projects in Philippines. Ayala holds 10% stake bringing local conglomerate expertise and relationships.
• Triputra GroupcoreStrategic or Co-development Partner · 25 May 2021STT GDC partnered with Indonesian conglomerate Triputra Group and Temasek to develop new data centre platform in Jakarta. JV building first campus in Kota Deltamas, Cikarang with development potential of up to 72MW capacity.
• Tata CommunicationscoreStrategic or Co-development Partner · 19 May 2016STT GDC acquired 74% stake in Tata Communications' data centre business in India and Singapore for strategic partnership. Tata retained 26% stake. JV includes 14 data centres in India (Delhi, Mumbai, Bengaluru, Chennai, Kolkata, Hyderabad, Pune) and 3 Singapore facilities. Tata Communications provides network and managed services while STT GDC provides data centre expertise and growth capital.

Scale indicators14 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Singtel: Singtel is Southeast Asia's largest telecom operator and ST Telemedia's JV partner in the KKR-led STT GDC consortium. As both an investor and incumbent telecom/data centre owner, Singtel is a broad comparable on operating model and geographic footprint.
• Brookfield Infrastructure Partners: Brookfield Infrastructure Partners owns and operates data centres, towers, utilities, and transport assets globally — a comparable large-scale infrastructure investor with similar long-duration capital and operational stewardship orientation.

Emerging players

• Stonepeak Infrastructure Partners: Stonepeak is an infrastructure-focused alternatives manager with significant data centre and digital infrastructure exposure. It pursues a comparable strategy of building platforms in communications and digital infrastructure, though at a smaller AUM than Brookfield/KKR/Macquarie.

Direct peers

• Digital Realty Trust: Digital Realty is a global data centre REIT operating hyperscale and colocation facilities across the Americas, EMEA, and APAC. Its global footprint, hyperscale customer book, and ESG commitments closely parallel STT GDC's positioning.
• DigitalBridge Group: DigitalBridge is a US-listed alternative asset manager investing across data centres, towers, fibre, and edge infrastructure — the closest pure-play strategic investor comparable to ST Telemedia's data centre and infrastructure technology portfolio focus.
• Equinix: Equinix is the world's largest carrier-neutral colocation operator and a direct comparable to STT GDC. ST Telemedia was historically Equinix's largest strategic shareholder (via the i-STT vehicle), giving it deep operational familiarity with Equinix's hyperscale/enterprise model across the same geographies.
• NTT Global Data Centers: NTT operates one of the world's largest data centre platforms spanning Asia, Europe, and North America with carrier-neutral colocation and managed services — comparable to STT GDC's 170+ facility, multi-region platform.
• GDS Holdings: GDS is a leading carrier-neutral data centre operator in China where ST Telemedia holds ~40% — making it simultaneously a portfolio holding and a direct operational peer in hyperscale colocation, sustainability, and customer mix.
• Macquarie Asset Management: Macquarie holds a 40% stake in VIRTUS Data Centres and operates one of the world's largest infrastructure investment platforms. It is a direct strategic investor peer for ST Telemedia's digital infrastructure thesis.
• KKR Global Infrastructure: KKR led the S$6.6B acquisition of STT GDC and previously held S$1.75B in preference shares. KKR's infrastructure franchise competes for the same large-cap digital infrastructure assets that ST Telemedia has historically built.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sttelemedia

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments15 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ST Telemedia