Company lists · Data refreshed September 2026

Top 25 Iot cloud consulting firms based in Kolkata, India

Name: Iot cloud consulting firms based in Kolkata, India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 109 companies tracked

RevenueBase identified 109 iot cloud consulting firms headquartered in Kolkata, India as of September 2026 and tracks 2,078 professional contacts across them, including 689 with verified work emails. Across India, Hyderabad is the largest hub for this category (523 companies); Kolkata has 109.

This list covers iot cloud consulting firms headquartered in Kolkata, India, 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.

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

109Companies

2,078Contacts tracked

689Verified emails

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The 25 largest iot cloud consulting firms based in Kolkata, India

Ranked by team size

Top 25 of 109 iot cloud consulting firms based in Kolkata, India, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to iot cloud 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	Capital Numbers	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	501-1,000	641 contacts →
	Partial evidence “Capital Numbers – Transforming Businesses with AI, Cloud & Digital Engineering BSE-Listed \| 500+ Experts \| AI, Cloud, Data, System Integration & Custom Software Development We…” Source: RevenueBase Database · checked Sep 28, 2026
2	Cloudkaptan	Strong evidence	Kolkata, IndiaHQ checked Sep 28, 2026	51-200	339 contacts →
	Strong evidence “CloudKaptan is a global IT services, consulting, and business solutions provider, empowering organizations through AI, Data, and Cloud.” Source: RevenueBase Database · checked Sep 28, 2026
3	Infocus Technologies PVT LTD	Strong evidence	Kolkata, IndiaHQ checked Sep 28, 2026	201-500	321 contacts →
	Strong evidence “Infocus Technologies Pvt Ltd is a Kolkata based SAP, ERP & Cloud consulting company.” Source: RevenueBase Database · checked Sep 28, 2026
4	Achievex Solutions Private Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	51-200	59 contacts →
	Indirect evidence “AchieveX Solutions is a new-age company under the Startup India flagship that solely believes in entrenching innovation to your ideas and turning them into reality.” Source: RevenueBase Database · checked Sep 28, 2026
5	Kazma Technology Pvt. LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	47 contacts →
	Partial evidence “Kazma technology Private Limited - NextGen IT consulting Company.” Source: RevenueBase Database · checked Sep 28, 2026
6	Surflex Technology Pvt. LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	51-200	43 contacts →
	Partial evidence “About Surflex Technology Surflex Technology, a global IT company headquartered in India, stands as a beacon of innovation in business consulting, technology services, and product…” Source: RevenueBase Database · checked Sep 28, 2026
7	Azure Software Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Azure Software Pvt.” Source: RevenueBase Database · checked Sep 28, 2026
8	Alphaxine	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Alphaxine Solutions Private Limited, founded in 2019 in Kolkata, began as an IT services firm specializing in SAP services for global clients.” Source: RevenueBase Database · checked Sep 28, 2026
9	Kalkey	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “We are the top notch software training institute where we provide the live project to practice for industrial level job role courses.” Source: RevenueBase Database · checked Sep 28, 2026
10	Eegrab	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “EEGRAB is a leading provider of IoT and IIoT solutions, empowering industries to achieve digital transformation through innovative and scalable technologies.” Source: RevenueBase Database · checked Sep 28, 2026
11	Intouch Networks	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	51-200	15 contacts →
	Partial evidence “We specialize in delivering comprehensive cloud services and solutions tailored to meet the unique needs of businesses across industries.” Source: RevenueBase Database · checked Sep 28, 2026
12	Afiyan Consulting Services	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Afiyan Empowering Organizations through Cutting-edge Cybersecurity and AI Solutions.” Source: RevenueBase Database · checked Sep 28, 2026
13	Cogenerate Technologies	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Cogenerate Technologies is a Digital Transformation Consultant and Service Provider with its presence in Asia-Pacific region, backed by a group of enthusiast and creative…” Source: RevenueBase Database · checked Sep 28, 2026
14	Vihan Informatics PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “IT infrastructure solution provider” Source: RevenueBase Database · checked Sep 28, 2026
15	Durbin Technologies	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “We're a next generation IoT and AI-based company focusing on providing comprehensive services to empower businesses with a robust ecosystem of IoT and AI solutions.” Source: RevenueBase Database · checked Sep 28, 2026
16	Genx Technology Services	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “7 years in infrastructure blueprinting and cloud migration 9 years in custom software development Putting steps forward towards blockchain, crypto currency and AI\ML We are a…” Source: RevenueBase Database · checked Sep 28, 2026
17	Mekhline Infotech Private Limited	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Mekhline Infotech is a cloud computing company offering a comprehensive IT products and services.” Source: RevenueBase Database · checked Sep 28, 2026
18	Techavo Systems	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Techavo Systems is your one-stop solution for all your IoT integration needs.” Source: RevenueBase Database · checked Sep 28, 2026
19	Teknowlegion Private Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “A leadership team with considerable business experience supported by strong development and delivery teams committed to offering solutions and services in the digital space by…” Source: RevenueBase Database · checked Sep 28, 2026
20	Aingenious	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	5 contacts →
	Partial evidence “Aingenious is a consulting company, that provides services in cutting-edge technologies to its clients in AI-enabled technology, SAP consulting, and Oracle consulting areas.” Source: RevenueBase Database · checked Sep 28, 2026
21	Ecotech Global Services	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	51-200	4 contacts →
	Partial evidence “Welcome to Ecotech Global Services, a premier Cloud Integration and Cybersecurity firm established in 2014.” Source: RevenueBase Database · checked Sep 28, 2026
22	Parallox Software PVT LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “We sell international cloud solutions- like SaaS [software as a service], and IaaS [Infrastructure as a service], inventory optimization using the latest AI, and ML solutions.” Source: RevenueBase Database · checked Sep 28, 2026
23	Lovelock & Lewes Audit	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	201-500	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
24	Cloudhub Digital Consultant PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Enhance & Empower your Digital Transformation Ride with Cloudhub Digital Consultant Pvt Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ressure Consultancy Services	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “At Ressure Consultancy Services (RCS), we specialize in crafting end-to-end technology solutions that empower businesses to scale, innovate, and lead in the digital space.” 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: iot cloud 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 iot cloud consulting firms.
Partial evidence: Its own public description names part of iot cloud consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iot cloud 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 109 iot cloud consulting firms based in Kolkata, India

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Iot cloud consulting firms based in Kolkata, India at a glance

As of Sep 28, 2026

33.2%Verified-email coverage

19.1Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole India list rather than for Kolkata, so it is reported there. Company counts and contact totals on this page are exact for Kolkata, over 109 companies.

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 iot cloud 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.
What qualifies: Companies headquartered in Kolkata, India whose own description of what they do matches “iot cloud 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 iot cloud 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 iot cloud consulting firms, and records with no verified work email. Companies headquartered outside Kolkata are excluded even when they keep an office there.
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, 689 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.

Iot cloud consulting firms by metro in India

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 iot cloud 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 iot cloud consulting firms are there based in Kolkata, India?

RevenueBase identified 109 iot cloud consulting firms headquartered in Kolkata, India 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?

Capital Numbers, headquartered in Kolkata, tops this list with the largest team on record.

Which city in India has the most iot cloud consulting firms?

Hyderabad leads India with 523 headquartered companies, followed by Pune (439) and Noida (347). Kolkata has 109.

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 689 verified decision-maker contacts tracked across these 109 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.