KT

케이티 / 주식회사 케이티

South Korea's second-largest telecommunications operator, providing the national network infrastructure, data centers, and sovereign-cloud environments required for domestic AI deployments.

KRX: 030200 (KOSPI)
NYSE: KT (ADR)
Other: KTCD (London Stock Exchange international order book)
Profile as of September 13, 2026
#91 in the AsiaAI Tech Index
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KT is a critical infrastructure provider for Korean AI, leveraging its telecom base and a major Microsoft partnership to deliver sovereign-cloud services. However, its reliance on Microsoft for core AI technology and recent regulatory penalties for data breaches highlight significant dependencies and governance risks.

Key figures

Revenue FY2025: 28.244 trillion Korean won
Revenue growth FY2025: 6.9%
Operating margin FY2025: 8.7%
Net income FY2025: 1.837 trillion Korean won
R&D spend FY2025: 355.3 billion Korean won
Capital expenditure FY2025: 2.940 trillion Korean won
Market capitalization 2026-09-11: Approximately 12.99 trillion Korean won Estimate
Microsoft Azure contract 5 years from Oct 2025: 1.365 trillion Korean won
Privacy penalty July 2026: 53.979 billion Korean won
Addressable business base 2024: More than 650,000

Overview

KT Corporation is South Korea's second-largest fixed and mobile telecommunications operator by market structure. Originally established by the South Korean government in 1981 as Korea Telecom, it was privatized and adopted its current name in 2001. Today, it operates as an independent listed company providing national telecommunications infrastructure, cloud services, data centers, and enterprise IT integration.

Its structural position rests on its nationwide network assets and deep relationships with Korean enterprises and public-sector organizations. KT supplies connectivity, data-center capacity, and sovereign-cloud offerings tailored for regulated industries. While it does not manufacture AI silicon, its infrastructure is essential for deploying AI workloads within South Korea's strict data-residency and security frameworks. By combining telecom access with managed cloud environments, KT acts as the local delivery channel for global AI technologies.

The AI angle

AI demand reaches KT primarily through increased utilization of its cloud and data-center infrastructure, as well as enterprise IT transformation projects. The company provides the local infrastructure, regulated-cloud environments, and systems integration that allow Korean organizations to deploy global AI models securely.

KT's AI portfolio includes the Mi:dm Korean-language large language model family and enterprise AI services built on Microsoft Azure OpenAI. A multibillion-dollar partnership with Microsoft underpins its sovereign-cloud strategy, utilizing Microsoft Cloud for Sovereignty to serve public-sector and financial clients. KT also deploys enterprise AI solutions linked to Palantir software. While it does not disclose an AI-only revenue line, AI adoption directly drives its B2B, cloud, and data-center growth.

Because KT does not manufacture AI accelerators, its AI link is indirect in semiconductors but highly direct in cloud and enterprise software services. Publicly named customers such as the Gyeonggi Provincial Government and Korea Water Resources Corporation rely on KT's Mi:dm-based AI platforms. Through its Microsoft partnership, KT targets an addressable base of more than 650,000 businesses and 17 million consumers in Korea, capturing value from local implementation and data hosting.

Technology and moat

KT's durable advantage is its installed infrastructure base and domestic regulatory familiarity rather than proprietary AI silicon or frontier-model scale. A new entrant cannot easily replicate its national fixed-line access network, mobile subscriber relationships, data-center footprint, or qualification history with regulated Korean customers. This physical and relational footprint makes KT a necessary partner for foreign technology companies seeking to enter South Korea's public sector.

However, its software and foundation-model layers are less defensible. KT relies heavily on Microsoft for Azure infrastructure, OpenAI models, and sovereign-cloud tooling. While its Mi:dm models offer Korean-language specialization, the core global cloud and frontier-model technology underlying its AI proposition is controlled by foreign partners. This makes its application layer vulnerable to competition from hyperscalers and domestic integrators like Naver Cloud, Samsung SDS, and LG CNS, which can supply comparable software solutions.

Five-pillar assessment

Scale and market position: South Korea's second-largest telecom operator, leveraging a massive national network, data-center footprint, and an addressable base of millions of consumers and businesses.
Technology and R&D: Strong in network operations and sovereign-cloud integration, but highly dependent on Microsoft for core frontier AI models and global cloud infrastructure.
Supply-chain centrality: Anchored by a multibillion-dollar strategic partnership with Microsoft for Azure and AI services, alongside enterprise deployment ties with Palantir.
Financial momentum: Reported strong FY2025 profit growth driven partly by real-estate gains, while committing heavily to AI infrastructure and a major Azure contract.
Governance and quality: Independent public company facing significant regulatory scrutiny, highlighted by a major 2026 privacy penalty for a customer data breach.

Supply chain and relationships

KT depends on a global supply chain for its data-center and network operations, purchasing servers, GPUs, networking equipment, and grid power from undisclosed hardware vendors. Its most critical software and cloud dependency is Microsoft, which supplies Azure services and frontier AI models under a massive five-year strategic partnership. KT Cloud reportedly committed 1.365 trillion Korean won to Microsoft Azure over five years.

Downstream, KT serves a vast domestic base, citing an addressable market of 17 million consumers and over 650,000 businesses. Named AI customers include the Gyeonggi Provincial Government and Korea Water Resources Corporation, which utilize its Mi:dm-based AI platforms. The company competes directly with SK Telecom and LG Uplus for connectivity, and with Naver Cloud, Samsung SDS, and LG CNS for enterprise AI deployments.

Customers

Gyeonggi Provincial GovernmentMi:dm-based AI platform project
Korea Water Resources CorporationMi:dm-based AI platform project

Suppliers

MicrosoftAzure, Azure OpenAI, and sovereign-cloud technology

Partners

MicrosoftMultibillion-dollar five-year AI and cloud partnership
Palantir TechnologiesDistributes and deploys AI and data platforms

Competitors

SK TelecomInferredCompetes in mobile, broadband, and AI services
LG UplusInferredCompetes in mobile, broadband, and enterprise connectivity
Naver CloudInferredCompetes for Korean cloud and AI deployments
Samsung SDSInferredCompetes in enterprise IT and AI integration
LG CNSInferredCompetes in enterprise IT and AI transformation

Geopolitics and risk

KT's operations and revenue are heavily concentrated in South Korea, exposing it entirely to domestic demand, regulatory oversight, and regional security risks. As a critical national infrastructure operator, it faces strict scrutiny over privacy, cybersecurity, and public procurement, and remains vulnerable to North Korean cyber threats or physical disruptions.

While KT does not manufacture chips, its cloud and data-center expansion requires imported GPUs and advanced networking hardware. US-led export controls affecting AI hardware supply to Asia could impact its capital expenditure, lead times, and capacity expansion. Additionally, its deep reliance on Microsoft ties its sovereign-cloud ambitions to US technology, limiting its strategic autonomy in the AI stack and ensuring its AI roadmap remains tethered to US corporate and regulatory decisions.

Risk matrix
Risk	Severity	Why it matters
Cybersecurity and data-protection enforcement	High	A July 2026 data breach resulted in a 53.979 billion Korean won penalty.
Dependence on Microsoft and OpenAI	High	Relies on Azure and OpenAI for core cloud and frontier-model capabilities.
AI infrastructure capital intensity	High	Cloud and data-center expansion requires heavy spending on facilities and GPUs.
South Korean regulatory exposure	High	Critical infrastructure status brings strict privacy, telecom, and procurement oversight.
Customer concentration in South Korea	High	Operations and revenue are almost entirely concentrated in the mature South Korean market.
Domestic telecom market maturity	Medium	Constrains organic subscriber growth, increasing reliance on B2B and AI expansion.
Export controls and AI-hardware	Medium	US restrictions on AI hardware could affect the cost and supply of imported GPUs.
North Korean and regional security	Medium	Exposed to cyber threats and physical disruption as a national operator.

Governance and ownership

KT is an independent public company listed on the Korea Exchange and the New York Stock Exchange. It is not part of a chaebol, nor is it a state-owned enterprise, though its history as the national telecom provider means it remains subject to heavy government influence through licensing and critical-infrastructure regulation.

Governance and cybersecurity are material risks. In July 2026, South Korea's Personal Information Protection Commission fined KT 53.979 billion Korean won over a data breach, highlighting the operational vulnerabilities of managing critical consumer data. The company is led by CEO Yoon-Young Park, who took over in March 2026, and operates with a board that includes the CEO as an inside director.

What to watch

Whether KT discloses a measurable AI, cloud, or data-center revenue line in FY2026.
Commercial sovereign-cloud wins from the Microsoft partnership in regulated sectors.
Data-center utilization relative to the 1.365 trillion Korean won Azure commitment.
Further regulatory action or customer churn following the 53.979 billion Korean won privacy penalty.
Whether operating profit remains elevated without FY2025's one-off real-estate gains.
Whether R&D spending recovers after the reported decline in first-half 2026.

Recent developments

July 30, 2026South Korea's Personal Information Protection Commission imposed a 53.979 billion Korean won penalty for a data breach.
April 29, 2026Filed its FY2025 Form 20-F annual report with the US SEC.
March 31, 2026Yoon-Young Park became CEO and Representative Director.
February 10, 2026Reported FY2025 consolidated revenue of 28.244 trillion Korean won and operating profit of 2.469 trillion Korean won.
September 1, 2025Signed a five-year strategic Microsoft partnership framework, including a 1.365 trillion Korean won Azure contract.
September 29, 2024Announced a multibillion-dollar AI, cloud, and IT partnership with Microsoft.

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Guides that cover KT

About this profile

Compiled with AI-assisted research from company filings, market data, and published reporting as of September 13, 2026, then reviewed by AsiaAI.FYI. Figures marked Estimate are not company-reported. Check primary filings before relying on any number.

Confidence: B. Audited FY2025 financial results are well supported, but the profile lacks public AI-specific revenue, complete segment revenue, and an independently published Korean-won market capitalization close to the research date.

Main sources: KT corporate and investor-relations disclosures; FY2025 earnings materials; Form 20-F filing announcement; Microsoft partnership announcement; Korean and international press coverage.

All 64 sources

Position in the AI stack

Provides the data centers, sovereign-cloud infrastructure, and enterprise integration services that allow Korean organizations to deploy global AI models locally.

Legal name: KT Corporation
Formerly: Korea Telecom, 한국통신
Headquarters: Seongnam, South Korea
Founded: 1981
Founders: South Korean government
Leadership: Yoon-Young Park / 윤영박, Chief Executive Officer and Representative Director
Employees: 13,886 (2026-09-09)
Ownership: Publicly listed
Listings: KRX: 030200 (KOSPI)
NYSE: KT (ADR)
Other: KTCD (London Stock Exchange international order book)
Business: Telecommunications, data centers, and enterprise cloud services
Sector: IT Services & Security
Telecom & Networking
Website: corp.kt.com