Company lists · Data refreshed September 2026

Top 25 Data modernization consulting firms worldwide

Name: Data modernization consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 23,621 companies tracked

RevenueBase identified 23,621 data modernization consulting firms worldwide as of September 2026 and tracks 1,130,014 professional contacts across them, including 314,591 with verified work emails. The United States is the largest market and London the largest hub.

This list covers data modernization consulting firms 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 28, 2026. Country and city lists for data modernization consulting firms 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 28, 2026 86% judged on-target in blind review

23,621Companies

1,130,014Contacts tracked

314,591Verified emails

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The 25 largest data modernization consulting firms worldwide

Ranked by team size

Top 25 of 23,621 data modernization consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to data modernization consulting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Infosys	Partial evidence	Bangalore, IndiaHQ checked Sep 28, 2026	10001+	323,099 contacts →
	Partial evidence “Infosys is a global leader in next-generation digital services and consulting.” Source: RevenueBase Database · checked Sep 28, 2026
2	DXC Technology	Partial evidence	Ashburn, VA, United StatesHQ checked Sep 28, 2026	10001+	82,768 contacts →
	Partial 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 28, 2026
3	Accenture In India	Indirect evidence	Bengaluru, IndiaHQ checked Sep 28, 2026	10001+	74,008 contacts →
	Indirect evidence “Accenture is a global professional services company with leading capabilities in digital, cloud and security.” Source: RevenueBase Database · checked Sep 28, 2026
4	Mphasis	Indirect evidence	Bangalore, IndiaHQ checked Sep 28, 2026	10001+	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 28, 2026
5	EXL	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	10001+	40,100 contacts →
	Indirect evidence “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Source: RevenueBase Database · checked Sep 28, 2026
6	Persistent Systems	Partial evidence	Pune, IndiaHQ checked Sep 28, 2026	10001+	27,154 contacts →
	Partial evidence “We are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients…” Source: RevenueBase Database · checked Sep 28, 2026
7	Yash Technologies	Partial evidence	East Moline, IL, United StatesHQ checked Sep 28, 2026	5,001-10,000	7,769 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 28, 2026
8	Sonata Software	Partial evidence	Bangalore, IndiaHQ checked Sep 28, 2026	5,001-10,000	7,508 contacts →
	Partial evidence “Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.” Source: RevenueBase Database · checked Sep 28, 2026
9	Tiger Analytics	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,160 contacts →
	Indirect evidence “In a world rife with complexity, we help our customers cut through uncertainty, plan strategically, and execute confidently.” Source: RevenueBase Database · checked Sep 28, 2026
10	Ness Digital Engineering	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	5,336 contacts →
	Partial evidence “Ness Digital Engineering is a global provider of Intelligent Data and Software Engineering services, specializing in data, AI, and cloud-powered solutions that drive innovation…” Source: RevenueBase Database · checked Sep 28, 2026
11	Celebal Technologies	Partial evidence	Jaipur, IndiaHQ checked Sep 28, 2026	1,001-5,000	4,851 contacts →
	Partial evidence “Celebal Technologies is a premier software services company in the field of Data Science, Big Data and Enterprise Cloud.” Source: RevenueBase Database · checked Sep 28, 2026
12	CES	Partial evidence	Bolingbrook, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,502 contacts →
	Partial evidence “CES is a trusted global provider of Technology and Business Process Modernization (BPM) services, serving enterprise clients for over three decades.” Source: RevenueBase Database · checked Sep 28, 2026
13	Ensono	Indirect evidence	Downers Grove, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,247 contacts →
	Indirect evidence “Ensono is an expert technology adviser and managed service provider.” Source: RevenueBase Database · checked Sep 28, 2026
14	Quest Software	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,206 contacts →
	Indirect evidence “At Quest Software, we help organizations build modern, trusted foundations for AI.” Source: RevenueBase Database · checked Sep 28, 2026
15	TALAN	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	5,001-10,000	3,155 contacts →
	Strong evidence “Founded in France, Talan has grown into an international group that supports our clients in their end-to-end Data & AI transformation by combining management consulting with…” Source: RevenueBase Database · checked Sep 28, 2026
16	AHEAD	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,989 contacts →
	Partial evidence “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Source: RevenueBase Database · checked Sep 28, 2026
17	Rocket Software	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,703 contacts →
	Indirect evidence “As a global technology leader, Rocket Software is the partner of choice for organizations transforming their IT from core systems to the cloud.” Source: RevenueBase Database · checked Sep 28, 2026
18	Speridian Technologies	Partial evidence	Albuquerque, NM, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,619 contacts →
	Partial evidence “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Source: RevenueBase Database · checked Sep 28, 2026
19	HSO	Indirect evidence	Amsterdam, JapanHQ checked Sep 28, 2026	1,001-5,000	2,600 contacts →
	Indirect evidence “We help companies modernize business operations, adopt intelligent automation, deliver real-time performance insights and connect the enterprise – accelerating the impact of…” Source: RevenueBase Database · checked Sep 28, 2026
20	People Tech Group INC	Partial evidence	Redmond, WA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,434 contacts →
	Partial evidence “People Tech Group is a leading Enterprise Solutions, Digital Transformation, Data Intelligence, and Modern Operation services provider.” Source: RevenueBase Database · checked Sep 28, 2026
21	Stefanini Latam	Partial evidence	São Paulo, BrazilHQ checked Sep 28, 2026	10001+	2,407 contacts →
	Partial evidence “Global Tech Consulting Company All in One.” Source: RevenueBase Database · checked Sep 28, 2026
22	Alithya	Partial evidence	Montréal, QC, CanadaHQ checked Sep 28, 2026	1,001-5,000	2,338 contacts →
	Partial evidence “We are trusted advisors who leverage AI and the latest technologies in our strategic consulting and digital transformation services.” Source: RevenueBase Database · checked Sep 28, 2026
23	CTG	Indirect evidence	Amherst, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,264 contacts →
	Indirect evidence “CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.” Source: RevenueBase Database · checked Sep 28, 2026
24	Artefact	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	1,001-5,000	2,016 contacts →
	Strong evidence “Artefact is a global consulting and engineering firm specializing in data and AI services, headquartered in Paris, and a leader in Europe.” Source: RevenueBase Database · checked Sep 28, 2026
25	SG Analytics	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,964 contacts →
	Strong evidence “SG Analytics (SGA), a Straive company, is a leading global data and AI consulting firm delivering solutions across AI, Data, Technology, and Research.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: data modernization consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names data modernization consulting firms.
Partial evidence: Its own public description names part of data modernization consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data modernization consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 23,621 data modernization consulting firms worldwide

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Data modernization consulting firms worldwide at a glance

As of Sep 28, 2026

27.8%Verified-email coverage

47.8Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

13,377

11-50

6,657

51-200

2,477

201-500

611

501-1,000

213

1,001-5,000

191

5,001-10,000

10001+

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 data modernization consulting firms, 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 data modernization consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “data modernization consulting firms”. 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 data modernization consulting firms), 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 data modernization consulting firms, 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, 314,591 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 28, 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.

Data modernization consulting firms by location

158 lists · largest first

Every Data modernization consulting firms 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 data modernization consulting firms, 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 data modernization consulting firms are there worldwide?

RevenueBase identified 23,621 data modernization consulting firms 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?

Infosys, headquartered in Bangalore, tops this list with the largest team on record.

Which country has the most data modernization consulting firms?

The United States leads with 5,358 companies, followed by India (2,286) and France (1,203). Every data modernization consulting firms list by country and city is linked on this page.

Which city has the most data modernization consulting firms?

London leads with 550 headquartered companies, followed by Paris (476) and Sao Paulo (294).

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 314,591 verified decision-maker contacts tracked across these 23,621 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 28, 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.