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Unlock Digital Innovation in Banking

The Challenge

Over the last few years, new digital-only banks have taken trillions of dollars in checking accounts, mortgages, and wealth management assets from traditional banks. How can banks tied to mainframe systems keep up with their digitally-native competitors?

The Solution

Composable banking is the answer. Composable banking is the ability to rapidly assemble new banking products and customer experiences from cloud-native building blocks. OpenLegacy transforms the way banks innovate by finally making composable banking a reality.

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The Fastest Path to a Composable Bank

OpenLegacy connects directly to core systems, automatically generates digital-ready code, and deploys as standard microservices or serverless functions. With OpenLegacy, banks can finally achieve the speed and resilience of the composable enterprise — harnessing legacy assets for continuous innovation.


Go Digital 10x Faster

Rapidly launch new digital innovations by harnessing the power of your legacy systems, mainframes, databases, or applications.


Reduce cost by 75%

No special skills needed. No changes to core systems required - dramatically cutting down dev & deployment effort


Built for the Hybrid Cloud

Deploy legacy assets as microservice-based APIs or serverless functions for on-premises, on the cloud or both.

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Use Cases and Benefits

Business Use Cases Technical Benefits
New Offerings

Rapidly introduce new mobile features and digital product offerings.


Quickly and automatically create open APIs from your core systems, like AS/400, IBM mainframes, CICS, IMS and many more.


Connect to FinTech and blockchain technologies to expand your banking services.


Reduce reliance on ESB middleware to lower overall costs and maintenance.

Open Banking

Unlock the potential of open banking with global APIs.


Keep connections secure by using HTTPS and TLS to access core systems. Your microservice-based APIs are secured with strong-type checking (JSON) and oAuth2 (web authentication).

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Case Study

Citibanamex drives digital transformation with OpenLegacy at a fraction of the time and cost



With OpenLegacy, composable banking is finally within reach

banorte (1)

Case Study

Banorte unlocks high-value millennial market with a streamlined digital user experience

Integrate BIAN APIs 10x faster to deliver composable banking

Watch now to learn how composable banking can enhance speed and resilience by
integrating BIAN APIs to deliver results faster

Become Digital to the Core

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