Company lists · Data refreshed September 2026

Top 25 Cloud transformation services worldwide

RevenueBase identified 26,993 cloud transformation services worldwide as of September 2026 and tracks 2,001,307 professional contacts across them, including 508,162 with verified work emails. The United States is the largest market and London the largest hub.

This list covers cloud transformation services worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for cloud transformation services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
26,993Companies
2,001,307Contacts tracked
508,162Verified emails
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The 25 largest cloud transformation services worldwide

Ranked by team size
Top 25 of 26,993 cloud transformation services worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to cloud transformation services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMumbai, IndiaHQ checked Sep 27, 202610001+634,047 contacts →

Indirect evidence

“Tata Consultancy Services (TCS) is the technology partner of choice for industry leading organizations worldwide.”

Source: RevenueBase Database · checked Sep 27, 2026
2Indirect evidenceAshburn, VA, United StatesHQ checked Sep 27, 202610001+82,768 contacts →

Indirect evidence

“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceBengaluru, IndiaHQ checked Sep 27, 202610001+74,008 contacts →

Partial evidence

“Accenture is a global professional services company with leading capabilities in digital, cloud and security.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceBangalore, IndiaHQ checked Sep 27, 202610001+43,484 contacts →

Indirect evidence

“A leading applied technology services company, we innovate to deliver service excellence and successful outcomes across sales, delivery and development.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceTokyo, JapanHQ checked Sep 27, 202610001+38,436 contacts →

Indirect evidence

“NTT DATA – a part of NTT Group – IT and business services headquartered in Tokyo.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceVancouver, BC, CanadaHQ checked Sep 27, 202610001+38,300 contacts →

Partial evidence

“TELUS Digital crafts unique and enduring experiences for customers and employees, and creates future-focused digital transformations that stand the test of time.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceAliso Viejo, CA, United StatesHQ checked Sep 27, 202610001+34,875 contacts →

Partial evidence

“UST is a global digital transformation solutions provider.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 27, 202610001+28,867 contacts →

Indirect evidence

“ServiceNow (NYSE: NOW) makes the world work better for everyone.”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceHanover, MD, United StatesHQ checked Sep 27, 202610001+24,693 contacts →

Indirect evidence

“We’re TEKsystems and TEKsystems Global Services.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceMumbai, IndiaHQ checked Sep 27, 202610001+21,036 contacts →

Indirect evidence

“LTI is now LTIMindtree, and we are getting businesses to the future, faster.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidencePalo Alto, CA, United StatesHQ checked Sep 27, 202610001+17,326 contacts →

Partial evidence

“Broadcom's VMware software manages cloud complexity so customers can modernize infrastructure, accelerate app development, and protect workloads, wherever these reside.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceChandler, AZ, United StatesHQ checked Sep 27, 202610001+12,899 contacts →

Indirect evidence

“Insight Enterprises, Inc.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 202610001+12,820 contacts →

Indirect evidence

“At Synechron, we believe in the power of digital to transform businesses for the better.”

Source: RevenueBase Database · checked Sep 27, 2026
14Partial evidenceSeoul, South KoreaHQ checked Sep 27, 202610001+11,283 contacts →

Partial evidence

“Samsung SDS provides cloud computing and digital logistics services.”

Source: RevenueBase Database · checked Sep 27, 2026
15Partial evidenceAustin, TX, United StatesHQ checked Sep 27, 202610001+11,123 contacts →

Partial evidence

“SoftServe is a technology services company specializing in autonomous enterprises with capabilities in AI-native applications, physical and agentic AI, cloud and data solutions.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceFrankfurt Am Main, GermanyHQ checked Sep 27, 202610001+10,154 contacts →

Indirect evidence

“Your digitalization partner with industry expertise With locations in more than 26 countries and over employees (2024), T-Systems is one of the leading providers of digital…”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 27, 202610001+9,653 contacts →

Indirect evidence

“For over two decades, we have been harnessing technology to drive meaningful change.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceEast Moline, IL, United StatesHQ checked Sep 27, 20265,001-10,0007,769 contacts →

Partial evidence

“YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceBangalore, IndiaHQ checked Sep 27, 20265,001-10,0007,508 contacts →

Indirect evidence

“Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceEl Dorado Hills, CA, United StatesHQ checked Sep 27, 20265,001-10,0007,360 contacts →

Partial evidence

“RSI is a trusted software engineering and digital transformation services partner to global enterprises navigating technological change.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceSomerset, NJ, United StatesHQ checked Sep 27, 20265,001-10,0006,734 contacts →

Indirect evidence

“Think of SHI as your personal technology concierge.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceStans, FranceHQ checked Sep 27, 20265,001-10,0006,574 contacts →

Partial evidence

“SoftwareOne is a global software and cloud solutions provider.”

Source: RevenueBase Database · checked Sep 27, 2026
23Partial evidenceWarszawa, PolandHQ checked Sep 27, 20265,001-10,0005,519 contacts →

Partial evidence

“With over 7 500 Power People, Sii is Poland’s #1 partner for technology consulting, AI-driven digital transformation, engineering, and business services, empowering companies to…”

Source: RevenueBase Database · checked Sep 27, 2026
24Indirect evidenceMumbai, IndiaHQ checked Sep 27, 20265,001-10,0004,858 contacts →

Indirect evidence

“Clover Infotech is a leading global IT services and consulting company.”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceNew Delhi, IndiaHQ checked Sep 27, 20261,001-5,0004,607 contacts →

Indirect evidence

“Our story began in 1987, when our founder, Ranjan Chopra, an alumnus of IIT Kanpur, set out to bridge the gap between business needs and IT solutions in India.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 26,993 cloud transformation services worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 508,162 reachable decision-makers.

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Cloud transformation services worldwide at a glance

As of Sep 27, 2026
25.4%Verified-email coverage
74.1Average contacts per company
11-50Median size (employees)
2.3%Largest-city concentration · London
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
11,577
11-50
9,381
51-200
3,879
201-500
1,120
501-1,000
441
1,001-5,000
347
5,001-10,000
77
10001+
122

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cloud transformation services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for cloud transformation services are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “cloud transformation services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cloud transformation services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among cloud transformation services, and records with no verified work email.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 508,162 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cloud transformation services by location

143 lists · largest first

Every Cloud transformation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cloud transformation services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cloud transformation services are there worldwide?

RevenueBase identified 26,993 cloud transformation services worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Tata Consultancy Services, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most cloud transformation services?

The United States leads with 5,297 companies, followed by India (4,631) and the United Kingdom (1,420). Every cloud transformation services list by country and city is linked on this page.

Which city has the most cloud transformation services?

London leads with 624 headquartered companies, followed by Hyderabad (450) and Pune (415).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 508,162 verified decision-maker contacts tracked across these 26,993 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.