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    Two professionals sit across from one another in a discussion over their laptops. This article is about the top IT consulting firms and how they're helping client companies achieve digital transformation today.

    In an era where digital transformation is essential to maintaining a competitive edge, thousands of companies look to IT consulting firms for guidance.

    Made up of the top management consulting and accounting firms, alongside the information technology focused firms that have risen in the last few decades, the leading IT consulting firms offer a deep portfolio of innovative products, strategy consulting, and managed services.

    This article looks at what IT consulting firms have to offer clients, the types of firms, and important considerations for choosing the best fit.

    Top Tier IT Consulting Firms

    Accenture logo.


    Previously under the Arthur Anderson umbrella, Accenture emerged in 2001, and two decades later, the professional services consultancy has become one of the biggest and most reputable in the world. With an extensive portfolio covering automation, cloud infrastructure, cybersecurity, and application development, Accenture competes with the best across IT services. Accenture’s global workforce is gigantic, with 670,000 people across 120 countries.

    Featured Partners: Adobe, AWS, Google, Microsoft, Oracle, Salesforce, SAP, and ServiceNow.

    Read more: Accenture: Channel Profiles & Services | Channel Insider
    Atos logo.


    Formed in 1997, Atos is lesser known but remains a top consideration for enterprise organizations. The global IT services and consulting leader offers digital solutions for cybersecurity, advanced computing, customer experience (CX), and edge network infrastructure. The Bezons, France-based consultancy also provides specialized services for Microsoft and SAP enterprise platforms. With 105,000 employees in 71 countries, Atos has a sizable workforce that can solve a variety of business problems.

    Featured Partners: Cisco, Cloudera, Dell, F5, HPE, IBM, McAfee, NetApp, Pega, and VMware.

    Also read: Atos: Channel Profiles & Services | Channel Insider
    BCG logo.

    Boston Consulting Group (BCG)

    In 1963, Bruce Henderson was charged with leading what would become one of the earliest management consulting success stories. Today, Boston Consulting Group (BCG) has six decades of experience with a workforce of 25,000 across 50 countries and 100 offices. BCG has long been a leader in innovation and research, offering clients hands-on consulting and managed services. BCG’s solutions span digital transformation, innovation strategy, and company data solutions for the bionic age.

    Featured Partners: Adobe, AWS, DataRobot, Meta, Microsoft, Salesforce, SAP, and Wipro.

    Read more: Boston Consulting Group: Channel Profiles & Services | Channel Insider
    Capgemini logo.


    Launched in 1967 to manage enterprise data processing, Capgemini competes with Accenture as one of the leading dedicated IT consultancies in the world. Today, the Paris-based firm’s global presence includes offices in 50 countries and 290,000 employees. Capgemini’s IT consulting services provide cybersecurity, digital transformation, artificial intelligence (AI), sustainability, and infrastructure support.

    Featured Partners: Databricks, Intel, Micro Focus, MuleSoft, Oracle, Salesforce, and UiPath.

    Also read: Capgemini: Channel Profiles & Services | Channel Insider
    Cognizant logo.


    Cognizant started out as the IT division for Dun & Bradstreet in the 1990s. It is now an independent firm and a leading IT service and consulting provider in North America. While Cognizant today serves a global audience with over 318,000 employees in 37 countries, more than 90% of revenue comes from Europe and North America. The New Jersey-based consultancy offers a comprehensive stack of IT services, including application modernization, business processes, digital strategy, intelligent process automation, and software product engineering

    Featured Partners: Cisco, Cyberark, Guidewire, Informatica, Nutanix, PTC, Qlik, and Red Hat.

    Read more: Cognizant: Channel Profiles & Services | Channel Insider
    Deloitte logo.


    With roots dating back to 1845, London-based Deloitte has long been one of the most reputable professional services firms. It continues to adapt to changing business needs in the digital transformation era. While the legendary network of firms offers robust financial strategy, audit, and advisory services, its growing stack of IT services for enterprise technology, cyber risk auditing, cloud, and analytics makes it the fastest adapter among the Big Four accounting firms. Deloitte’s global footprint includes offices in 150 countries with more than 330,000 employees.

    Featured Partners: Anaplan, Blue Prism, Infor, NVIDIA, OpenText, ServiceNow, and Splunk.

    Also read: Deloitte: Channel Profiles & Services | Channel Insider
    EY logo.


    Another historic professional services firm, Ernst & Young (EY), has a century of experience working with enterprise clients. Like Deloitte, EY offers a robust suite of traditional advisory services with growing service lines devoted to technology and IT consulting services. EY currently offers consulting services for analytics, CX, cybersecurity, and digital and technology transformation, with additional technology solutions for auditing, taxes, and connected capital. The global consulting firm’s workforce includes 300,000 across 150 countries and 700 offices. 

    Featured Partners: Adobe, Blue Prism, Enableon, Microsoft, Pega, SAP, and ServiceNow.

    Read more: EY and ServiceNow combine forces to build automation solutions for the financial industry and a $1B business | TechRepublic
    HCL logo.

    HCL Technologies

    Founded by six engineers in 1976 outside New Delhi, India, HCL Technologies first established itself as an innovative microprocessor and database software company. By 1991, HCL’s R&D division emerged within the company’s portfolio, developing service lines for digital business, operational technology, and product development. HCL’s Digital Consulting services focus on business process optimization, Agile delivery transformation, experience design, and defining industry capabilities. Today, HCL Technologies includes 197,000 personnel across 52 countries and a full range of IT service solutions.

    Featured Partners: AppDynamics, BMC, GE, SnapLogic, Virtustream, and WorkFusion.

    Also read: HCL Technologies: Channel Profiles & Services | Channel Insider
    IBM logo.


    Not just a historic name, IBM remains a world-class technology and consulting services provider for many global companies. The New York-based company includes 350,000 employees across 100 countries and a portfolio of end-to-end digital solutions. IBM’s full stack of consulting services covers applications, AI, hybrid cloud infrastructure, supply chain services, and talent transformation. With IBM’s more extensive portfolio, clients can directly access the vendor’s industry-recognized hybrid infrastructure, analytics, and database technology.

    Featured Partners: Adobe, Apple, AWS, Cisco, Microsoft, Salesforce, SAP, and Workday.

    Read more: IBM: Channel Profiles & Services | Channel Insider
    Infosys logo.


    In 1981, a group of engineers from Pune, India, started what would become one of the most extensive global IT services and consulting firms. Four decades later, Infosys has a workforce of 314,000 people across 50 countries and an immense portfolio of 28 different solution areas. Some of Infosys’s specialties include its business process outsourcing services for almost every aspect of modern business management, software development services, and enterprise application services for SAP, Oracle Cloud, Microsoft, and Salesforce.

    Featured Partners: Appian, EMC, Huawei, MetricStream, MongoDB, Nokia, and Talend.

    Also read: Infosys: Channel Profiles & Services | Channel Insider
    KPMG logo.


    Another historic advisor firm, KPMG is a global network of professional services firms with 236,000 employees across 145 countries as of 2022. A testament to KPMG’s strength, the firm spun off two reputable IT consulting firms—BearingPoint in 2001 and Atos in 2002—and continues to be a leading IT consultancy two decades later. KPMG, like Deloitte and EY, offers extensive support in the form of assurance, tax, legal, and an admirable IT services portfolio. Under its Private Enterprise services suite, KPMG provides its clients with consulting services that cover general IT management, data and analytics, R&D, cybersecurity, and strategic alliances.

    Featured Partners: Alibaba Cloud, Coupa, Google Cloud, Microsoft, RSA, Sailpoint, and SAS.

    Read more: KPMG: Channel Profile & Services | Channel Insider

    McKinsey & Company

    The oldest of the Big Three management consulting firms, McKinsey & Company remains one of the most admired global consultancies. McKinsey’s workforce includes 30,000 across 67 countries and 133 cities a century after its founding in 1926. McKinsey’s more extensive portfolio covers nearly every modern business need, from marketing to M&A, sustainability, and digital transformation. With digital technology increasingly needed across business services, McKinsey’s expertise includes data analytics, IT operations, technology modernization, and transformation management.

    Featured Partners: Activision, MachineMetrics, Newgen, PTC, Refinitiv, and ThoughtSpot.

    Also read: McKinsey: Channel Profile & Services | Channel Insider
    PwC logo.


    Formed by the merger of two legendary London accounting firms in 1998, PricewaterhouseCoopers (PwC) is the final of the Big 4 accountancies on this list. Today, the international network of firms comprises 295,000 professionals across 156 countries and offers a range of professional services, including assurance, consulting, and digital solutions. PwC’s core consulting services cover cloud infrastructure, cybersecurity, risk management, and digital transformation. The firm’s managed services include application security, controls testing, and threat detection and response.

    Featured Partners: Adobe, AWS, Google Cloud, Microsoft, Salesforce, Oracle, and SAP.

    Read more: PwC: Channel Profiles & Services | Channel Insider
    TCS logo.

    Tata Consultancy Services (TCS)

    The largest of the firms on this list by workforce size and market capitalization in 2022, Tata Consultancy Services (TCS) of Mumbai, India, is one of the most reputable IT services, consulting, and business solutions providers. Tata’s core services focus on end-to-end IT solutions for analytics, blockchain, cognitive computing, cybersecurity, automation, and IoT engineering. TCS has a workforce of 530,000 employees and offices in 46 countries to support a global audience of clients.

    Featured Partners: Dell, IBM, HPE, Ping Identity, SailPoint, SAS, Teradata, and Zscaler.

    Also read: TCS: Channel Profiles & Services | Channel Insider
    Wipro logo.


    Initially started in 1945, Wipro moved into the budding IT services sector in the 1970s before becoming a leading consultancy and business process vendor. Wipro’s portfolio touches every angle of enterprise IT environments with a whole suite of IT consulting services. These include digital strategy, automation, cybersecurity, big data, assurance, cloud infrastructure, and product engineering. Wipro’s international presence consists of 160 offices across 42 countries and 220,000 employees, headquartered in Bangalore, India.

    Featured Partners: Broadcom, Cloudflare, Crowdstrike, MuleSoft, Software AG, and TIBCO.

    Read more: Wipro: Channel Profiles & Services | Channel Insider

    Honorable Mention IT Consulting Firms

    Avanade Bain Booz Allen Hamilton
    Capco CGI DXC Technology
    EPAM Fujitsu General Dynamics
    HPE LEK Consulting NTT
    Publicis Sapient SAP Tech Mahindra

    What Is an IT Consulting Firm?

    IT consulting firms are businesses with staff and expertise dedicated to helping clients plan, adopt, and execute their information technology (IT) objectives. Small companies to enterprise organizations hire IT consultants to strategize, design, and implement components of their business that are out of reach or scope for in-house personnel.

    Today’s IT consulting industry consists of several veteran consultancies known for financial and business services as well as many IT-focused consulting firms and IT managed service providers.

    Types of IT Consulting Services

    As the IT ecosystem grows in complexity, so does the range of services offered by the top consulting firms:

    How to Choose an IT Consulting Firm

    There’s no shortage of firms trying to earn new client business, so choosing an IT consulting firm comes down to alignment with price, business objectives, and specializations.

    For smaller businesses, the above IT consulting firms are a great place to start for seeing what the best in the business offer. Comprehensive IT consulting companies like Accenture, Capgemini, and Deloitte offer a complete portfolio of IT consulting solutions, but the price tag for services often targets enterprise organizations.

    An alternative path to choosing an IT consulting firm is considering your business’s core technologies. Whether it’s multi-cloud workloads involving AWS and Azure or a multinational company adopting edge networking, IT consultancies offer varying expertise in process and technology development. IT consulting firms often obtain certifications and partnerships with the leading technology vendors to validate their credibility in specific services and proprietary technologies.

    Learn more about the leading partners for IT consultancies with Top Tech Vendors Power the Modern Enterprise and Top MSSP Tools and Cybersecurity Vendors on Channel Insider.

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