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ACI Worldwide

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Read 117 ACI Worldwide reviews and testimonials from customers, explore 105 case studies and customer success stories, and watch 14 customer videos to see why companies chose ACI Worldwide as their Payment Gateway Software

ACI Worldwide, the Universal Payments (UP) company, powers electronic payments for more than 5,100 organizations around the world. More than 1,000 of the largest financial institutions and intermediaries, as well as thousands of global merchants, rely on ACI to execute $14 trillion each day in payments and securities. In addition, a myriad of organizations utilize their electronic bill presentment and payment services. Through their comprehensive suite of software solutions delivered on customers’ premises or through ACI’s private cloud, they provide real-time, immediate payments capabilities and enable the industry’s most complete omni-channel payments experience.

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  • 117 Testimonials View
  • 105 Case Studies View
  • 14 Customer Videos View
Customer Rating Review Score based on 3962 reference ratings
4.8/5.0 (3962)
  • Summer 2025 Market Leader Payment Gateway Software

117Testimonials

  • “Our ATM network is one of the fastest growing networks in the world today, with a wide range of proven products, domain knowledge and commitment to the industry, we believe …

  • “Historically, we often lost merchant opportunities that required robust mobile application support, but that is no longer the case. From opportunities with smaller merchants to supporting one of the largest …

  • “With ACI’s technology, integration was seamless."

116 more testimonials currently locked

105 Case Studies

  • Blue Cross Blue Shield of Michigan Talks Meeting Member Demands in Healthcare

  • HSBC Bank UK Creates a Highly Customized System

  • Doing Payments Better, Quicker and at Scale

104 more case studies currently locked

14 Customer Videos

  • Mastercard Utilizes ACI for Integrated Processing Solutions
  • How Suncorp Australia is meeting customer expectations while increasing security
  • Delivering a Persona-Based Mobile Payments Experience
13 more videos currently locked

Additional ACI Worldwide Information & Resources

Read ACI Worldwide Reviews, Testimonials & Customer References from 117 real ACI Worldwide customers.

Browse ACI Worldwide Case Studies, Customer Success Stories, & Customer References from 105 businesses that use ACI Worldwide.

Watch ACI Worldwide Customer Videos to learn why 14 businesses chose ACI Worldwide.