10 Tier 1 IT Companies in The World – 2025

When people ask “Is IBM a Tier 1 company?” or “Is Capgemini a Tier 1 IT company?”, they’re looking for the global leaders that set the benchmark for IT services. Tier 1 IT companies are those with multi-billion-dollar revenue, a global presence, enterprise clients, and proven expertise in consulting, software, cloud, and digital transformation.

At SORTED FIRMS, we’ve created this exclusive list of Tier 1 IT services companies in the world to help businesses, startups, and enterprises connect with trusted partners like IBM, Oracle, TCS, Accenture, and Capgemini. These companies not only dominate the IT sector but also define innovation across industries.

What is a Tier 1 company?

Tier 1 companies are top-level firms with multi-billion-dollar revenues, global operations, and massive employee strength. SORTED FIRMS defines them as trusted partners for enterprises due to their scale and innovation power.

Which are Tier 1 companies in India?

India’s Tier 1 IT firms include TCS, Infosys, Wipro, HCL, and Tech Mahindra. SORTED FIRMS ranks them high for their global footprints, Fortune 500 clientele, and billion-dollar turnovers.

Process of Sorting Tier 1 IT Companies

At SORTED FIRMS, we didn’t just randomly compile names. Instead, we followed a transparent sorting process:

• ✅ Revenue & Market Cap – Annual revenue above $10 Billion.
• ✅ Clientele – Fortune 500 and Government clients.
• ✅ Global Operations – Offices in 30+ countries.
• ✅ Service Portfolio – IT consulting, cloud, AI, ERP, digital transformation.
• ✅ Brand Reputation – Consistently ranked in Gartner, Forbes, Fortune Global 500.

This process ensures our Tier 1 IT companies list is both authentic and reliable for businesses worldwide.

📊 Top 10 Tier 1 IT Companies – Ranked by 3 Key Factors

World’s Largest 10 IT Consulting Companies 2025

1. Microsoft
2. IBM
3. Oracle
4. Google
5. Capgemini
6. TCS
7. Wipro
8. Deloitte
9. Cognizant
10. Apple

1. IBM – A Global Tier 1 IT Company

When people ask “Is IBM a Tier 1 company?”, the answer is a resounding Yes. IBM (International Business Machines Corporation) has been a pioneer in IT for over a century and continues to dominate as a Tier 1 IT services company. Headquartered in the USA, IBM generates over $62 billion in annual revenue, serving industries from finance to healthcare and government. Its services include hybrid cloud, AI solutions, IT consulting, and enterprise software. IBM is also a leader in quantum computing and AI research. With offices in more than 170 countries, IBM is not only Tier 1—it is considered a benchmark of innovation in the IT industry.

2. TCS (Tata Consultancy Services) – India’s Leading Tier 1 IT Firm

When it comes to Indian IT powerhouses, TCS is undoubtedly a Tier 1 IT company. Founded in 1968 and headquartered in Mumbai, TCS is part of the Tata Group and has become one of the world’s largest IT services firms, with revenues surpassing $27 billion. It operates in 46+ countries, providing services in digital transformation, IT consulting, AI, machine learning, automation, and cloud computing. TCS consistently ranks in the Fortune Global 500 and is a trusted partner for global Fortune 100 companies. Businesses across banking, telecom, retail, and healthcare rely on TCS for scalable IT solutions. Clearly, TCS holds a solid position in the Tier 1 IT services category worldwide.

3. Oracle – A Tier 1 IT & Cloud Leader

When asked “Is Oracle a Tier 1 IT company?”, the answer is absolutely yes. Oracle Corporation, headquartered in Austin, Texas, is one of the biggest Tier 1 IT companies in the world, generating more than $50 billion in revenue. Known primarily for its database solutions, Oracle has evolved into a global leader in ERP software, cloud computing, AI-driven applications, and enterprise IT services. It serves governments, Fortune 500 companies, and SMEs worldwide. Oracle’s cloud infrastructure and AI tools are powering industries such as finance, retail, telecom, and logistics. With offices in 175+ countries, Oracle stands tall as a Tier 1 company with unmatched global reach.

4. Capgemini – Europe’s Top Tier 1 IT Services Company

Many wonder, “Is Capgemini a Tier 1 company?” The answer is a strong yes. Capgemini, headquartered in Paris, France, is one of the most trusted Tier 1 IT services firms in the world. With revenues of over $25 billion, Capgemini offers consulting, digital transformation, IT outsourcing, and cloud services. It is a strategic partner for industries such as banking, automotive, telecom, retail, and energy. Operating in 50+ countries with over 350,000 employees, Capgemini has built a reputation for innovation-driven IT solutions. Its acquisition of Altran has also made it a global leader in engineering and R&D services. Without a doubt, Capgemini is firmly in the Tier 1 IT company league.

5. Accenture – The Global Tier 1 Consulting & IT Giant

When discussing Tier 1 IT companies, Accenture is always at the top of the list. Headquartered in Dublin, Ireland, Accenture generates more than $64 billion in annual revenue and operates in 120+ countries. The company provides IT consulting, digital transformation, cloud services, AI, cybersecurity, and strategy consulting to Fortune 500 companies and governments. Accenture is widely recognized for its innovation hubs and strong partnerships with Microsoft, Google, AWS, and SAP. With over 750,000 employees worldwide, Accenture is not only a Tier 1 IT services company, but also a thought leader shaping the future of business and technology.

6. Infosys – India’s Flagship Tier 1 IT Company

Among the top IT services firms in India, Infosys proudly holds its place as a Tier 1 IT company. Founded in 1981 and headquartered in Bengaluru, Infosys is known for outsourcing, consulting, cloud solutions, AI, and digital transformation services. With a revenue of over $18 billion, Infosys serves global enterprises across banking, healthcare, retail, manufacturing, and telecom. It operates in 50+ countries and is recognized for its focus on sustainability, AI innovation, and digital workforce solutions. Infosys consistently ranks in the Forbes Global 2000 and remains a trusted IT partner for top businesses worldwide. Clearly, Infosys is one of the pillars of Tier 1 IT services.

7. Wipro – A Global Tier 1 IT & Consulting Firm

Wipro is one of the most respected Tier 1 IT companies in the world. Founded in 1945 and headquartered in Bengaluru, India, Wipro generates over $11 billion in annual revenue. It provides services in IT consulting, cloud solutions, digital transformation, AI, cybersecurity, and business process outsourcing (BPO). Wipro operates in 65+ countries, serving clients in banking, energy, healthcare, retail, and telecom. The company is also a leader in sustainability and green IT initiatives. With over 240,000 employees worldwide, Wipro is widely acknowledged as a Tier 1 IT services company that delivers global-scale digital innovation.

8. HCL Technologies – Driving Innovation as a Tier 1 IT Company

HCL Technologies, headquartered in Noida, India, is another Tier 1 IT services company with a global reputation. With annual revenues exceeding $13 billion, HCL offers expertise in software development, cloud computing, AI-driven solutions, IoT, engineering, and digital consulting. It serves Fortune 500 companies in sectors like manufacturing, aerospace, telecom, banking, and healthcare. HCL is also a pioneer in product engineering and R&D services, making it a go-to partner for global enterprises. Operating in 60+ countries, with more than 225,000 employees, HCL has proven itself as a top Tier 1 IT company shaping the digital economy.

9. Cognizant – A Trusted Tier 1 IT & Consulting Partner

Cognizant Technology Solutions, headquartered in New Jersey, USA, is one of the top Tier 1 IT companies in the world. With annual revenues exceeding $19 billion, Cognizant is known for digital transformation, IT consulting, cloud migration, AI solutions, and business process outsourcing (BPO). It serves Fortune 500 clients across banking, insurance, healthcare, retail, and manufacturing industries. Cognizant has a strong global presence in 40+ countries, with delivery centers in India and other Asian markets. The company’s client-focused approach and innovation-driven services make it a trusted name among Tier 1 IT services providers worldwide.

10. Deloitte – A Tier 1 IT Consulting & Professional Services Leader

When talking about Tier 1 companies, Deloitte is a name that cannot be missed. Headquartered in London, Deloitte is part of the “Big Four” consulting firms and generates over $65 billion annually. While known for auditing and financial consulting, Deloitte is also a Tier 1 IT consulting powerhouse, offering services in cybersecurity, AI, digital strategy, cloud transformation, and ERP implementations. It serves government bodies, Fortune 500 companies, and large enterprises worldwide. With offices in 150+ countries, Deloitte combines deep industry knowledge with cutting-edge technology solutions, making it a top-tier IT consulting and services company trusted by global businesses.

11. SAP – Tier 1 Enterprise Software & IT Solutions Leader

SAP SE, headquartered in Walldorf, Germany, is one of the biggest Tier 1 IT companies specializing in enterprise software, ERP, cloud platforms, AI, and database management systems. With annual revenues above $33 billion, SAP serves Fortune 500 companies in manufacturing, retail, logistics, finance, and more. Its ERP software powers global businesses, making it a trusted IT partner worldwide.

12. DXC Technology – A Global Tier 1 IT Services Firm

Formed through the merger of CSC and HPE Enterprise Services, DXC Technology is a Tier 1 IT services company headquartered in Virginia, USA. With revenues exceeding $14 billion, DXC provides cloud services, IT outsourcing, analytics, AI, and cybersecurity. It operates in 70+ countries, delivering digital transformation to industries like healthcare, banking, and defense.

13. NTT Data – Japan’s Leading Tier 1 IT Services Company

NTT Data, part of the Nippon Telegraph and Telephone Corporation, is Japan’s largest Tier 1 IT company. With revenues surpassing $30 billion, NTT Data specializes in system integration, IT consulting, cloud solutions, and AI services. It serves governments, financial institutions, and enterprises worldwide, with a strong presence across Asia, Europe, and North America.

14. Tech Mahindra – India’s Global Tier 1 IT Innovator

Tech Mahindra, headquartered in Pune, India, is a fast-growing Tier 1 IT services firm. Generating over $7 billion in revenue, Tech Mahindra provides IT consulting, BPO, telecom solutions, AI-driven platforms, and cloud services. It operates in 90+ countries and is a major IT partner for the telecom and automotive industries.

15. Fujitsu – Japan’s Oldest Tier 1 IT Company

Fujitsu, headquartered in Tokyo, is one of Japan’s top Tier 1 IT companies, with revenues exceeding $27 billion. It provides services in IT infrastructure, AI, cloud, cybersecurity, and digital transformation. Fujitsu has a presence in over 100 countries and is a leader in supercomputing and enterprise IT services, serving industries like government, defense, and healthcare.

16. HP Enterprise (HPE) – A Tier 1 IT Infrastructure Giant

Hewlett Packard Enterprise (HPE), headquartered in Houston, Texas, is a global Tier 1 IT infrastructure and services company. With annual revenues of $30+ billion, HPE delivers cloud solutions, hybrid IT, AI, and enterprise servers. It is a leading IT partner for industries requiring high-performance computing, storage, and networking solutions.

17. CGI Inc. – Canada’s Tier 1 IT Services Company

CGI, headquartered in Montreal, Canada, is one of the largest Tier 1 IT consulting and outsourcing firms in North America. With annual revenues of $12 billion, CGI provides cloud solutions, IT consulting, BPO, AI, and cybersecurity services to clients across banking, retail, manufacturing, and government.

18. Cognizant Japan (Hitachi Consulting) – A Tier 1 IT Integration Specialist

Hitachi Consulting, now merged with other IT divisions, is part of Japan’s Tier 1 IT ecosystem under the Hitachi Group. With billions in revenue, it provides IoT, AI, IT consulting, and system integration solutions to enterprises across manufacturing, automotive, and infrastructure sectors.

19. Atos – Europe’s Trusted Tier 1 IT Services Provider

Atos, headquartered in Bezons, France, is a major Tier 1 IT services company with revenues exceeding $12 billion. It is well known for cybersecurity, cloud solutions, AI, and big data services. Atos has a strong global presence in 70+ countries, serving industries like healthcare, finance, public sector, and telecom.

20. LTI Mindtree (Now LTIMindtree) – India’s Emerging Tier 1 IT Firm

LTIMindtree, formed after the merger of Larsen & Toubro Infotech and Mindtree, is a rising Tier 1 IT company from India. With revenues crossing $5 billion, it provides IT consulting, cloud, AI, analytics, and enterprise software solutions. It operates in 30+ countries and is rapidly climbing the ranks as a trusted IT services partner.

🏆 Conclusion

From IBM, Oracle, Accenture, TCS, Infosys, and Capgemini to emerging players like LTIMindtree, the world of Tier 1 IT companies is dominated by firms that combine global scale, innovation, and trust. These companies generate multi-billion-dollar revenues, serve Fortune 500 clients, and operate across dozens of countries.

At SORTED FIRMS, we built this list to help businesses, startups, and governments easily identify top-tier IT service providers. Whether you are looking for cloud services, AI consulting, ERP solutions, or digital transformation partners, these 20 Tier 1 IT companies represent the pinnacle of IT excellence worldwide.

❓ FAQs About Tier 1 IT Companies