CGI

CGI

Global IT and business consulting company offering comprehensive application modernization including mainframe migration and portfolio rationalization.

CaliforniaWashingtonColoradoConnecticutHawaiiIllinoisMassachusettsMarylandLegacy Modernization

About CGI

CGI is a leading IT and business consulting services firm, established in 1976, and ranks among the largest global providers in its industry. With a presence in 400 locations across 21 industries worldwide, CGI specializes in delivering comprehensive and scalable consulting services, including cyber security, cloud solutions, and IT services. The company is committed to being insights-driven and outcomes-based, enabling organizations to maximize their investment returns. CGI prioritizes constructive engagement and values feedback from the community, maintaining a professional environment across its platforms. As a trusted partner, CGI focuses on providing localized service backed by global expertise, ensuring sustainable and impactful solutions for clients.

Editorial Review

Our take on CGI

CGI brings decades of enterprise IT experience to application modernization, offering comprehensive services that span portfolio assessment through migration execution and ongoing management. The company's global delivery network enables efficient execution of large-scale modernization programs.

CGI's modernization approach uses AI-augmented tools and processes to create dynamic views of application portfolios, enabling continuous identification of improvement opportunities. Their services address the full range of modernization options including migration, replatforming, consolidation, decommissioning, and replacement.

The company offers specialized expertise in mainframe modernization, helping clients transition from mainframes to more agile, flexible, and cost-effective platforms while preserving the value and stability of legacy applications. Their quality assurance and testing services leverage automation to reduce costs and accelerate time to market.

CGI's extensive alliance network enables objective identification of best-fit solutions for each client's unique situation. Their comprehensive approach addresses not just technology but also business process reengineering, change management, and training.

Badges & Credentials

Verified credentials and recognition earned by CGI

9 badges

Verification

Verified

This agency has a verified website presence.

LinkedIn Verified

This agency has a verified LinkedIn company page.

Recognition

Top Rated

This agency has an exceptional AgencyCluster score of 80+.

Certifications

Google Partner

Certified Google Partner with proven expertise in Google products.

AWS Partner

Amazon Web Services Partner Network member.

Microsoft Partner

Microsoft Partner Network member.

Salesforce Partner

Certified Salesforce Consulting Partner.

Experience

15+ Years

Established in 1976. Over 15 years of experience.

Company

Enterprise

Enterprise (500+)

Awards & Recognition

Rankings earned on AgencyCluster

Top 25 Legacy Modernization - 2026

Top 25 Legacy Modernization

Nationwide · 2026

Top 10 Legacy Modernization in California - 2026

Top 10 Legacy Modernization

California · 2026

Top 50 Legacy Modernization - 2026

Top 50 Legacy Modernization

Nationwide · 2026

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About CGI

Common questions about CGI.

Where does CGI rank on AgencyCluster?

CGI has earned rankings on 3 AgencyCluster lists: Top 25 Legacy Modernization, Top 10 Legacy Modernization in California, Top 50 Legacy Modernization. Their highest AgencyCluster Score is 89/100. Rankings are merit-based and determined by evidence across six evaluation pillars — agencies cannot pay for higher positions.

What are CGI's strengths according to AgencyCluster?

In our evaluation for Legacy Modernization, CGI scores 89/100 overall. Their strongest areas are Credibility, Category Fit, Freshness, Proof of Work & Outcomes, Reputation, Delivery Maturity. A high Outcomes score means they have verifiable case studies with measurable results — the most heavily weighted factor in our methodology.

How long has CGI been in business?

CGI was founded in 1976, giving them over three decades of experience in legacy modernization. In an industry where many agencies are less than 5 years old, 50+ years of sustained operations signals stability, client retention, and the ability to adapt through multiple technology cycles. Today, the team is enterprise.

What certifications or badges does CGI hold?

CGI holds the following credentials on AgencyCluster: Google Partner, AWS Partner, Microsoft Partner, Salesforce Partner. These badges are verified by our editorial team and contribute to the agency's Credibility pillar score. Certifications like partner badges (e.g., Google Partner, AWS Partner) indicate that the agency has met specific vendor requirements for expertise and client outcomes.

Where does CGI operate?

CGI has a presence across 8 states: California, Washington, Colorado, Connecticut, Hawaii, Illinois, Massachusetts, Maryland. A multi-state presence can be important for enterprise buyers who need local account management, on-site workshops, or time-zone-aligned teams. It also suggests the agency has scaled beyond a single-office operation.

Is CGI a verified agency?

Yes. CGI has been vetted and verified by AgencyCluster's editorial team through a rigorous, multi-factor review process. Unlike self-serve directories, AgencyCluster does not accept automated submissions — every agency is evaluated manually before being published. Our vetting covers identity verification (website, LinkedIn, domain age), business legitimacy (years of operation, team size, registered presence), evidence of work (case studies, portfolio, client outcomes), reputation checks across third-party platforms, activeness and freshness of their online presence, and screening for red flags including misconduct, fraud, or misleading claims. Agencies that fail any critical check are not listed. For CGI, verified signals include a functioning website, LinkedIn company profile, 50+ years of operating history (founded 1976), 4 verified certifications, 3 earned rankings on curated top lists.