Core Banking Architectures (Communities - Services Offered)

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Core Banking Architectures


Core Banking Architectures define how a bank’s essential systems—such as account management, payments, and transaction processing—are built and scaled. The right architecture is not just a technical choice; it’s a strategic foundation that determines the bank's agility, innovation capacity, and operational efficiency.

1. Monolithic Architecture

This traditional model places all functionalities in a single, unified codebase. Monolithic core banking solutions are straightforward to build and test, making them efficient in the short term. However, as the system grows, they become increasingly difficult to modify, scale, or adapt to new technologies.

2. Service-Oriented Architecture (SOA)

SOA transitions from monoliths to modular services. By separating different banking functions into individual components, SOA enables easier integration with third-party services and adds flexibility—making it simpler to extend capabilities over time.

3. Microservices Architecture

Taking modularity further, microservices isolate each function into its own independent service, communicating via APIs. This allows banks to update or scale parts of their system without disrupting others, enabling much faster deployment of new features.

4. Composable Banking

Composable banking is the most flexible and agile model to date. Think of it like building with Lego blocks: independent services can be added or removed via open APIs, allowing institutions to tailor their core according to market needs. This approach offers unmatched agility, customization, innovation, and cost optimization.

Choosing between architectural styles depends on your bank’s flexibility needs, pace of digital evolution, and growth ambitions. A forward-looking strategy aligns with modular and composable architectures to support fast product development, seamless scaling, and resilient operations.

Explore more on Core Banking Architectures here:
https://www.igcb.com/blogs/what-are-the-different-core-banking-architectures/


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Last Update : 05 September 2025 3:13 PM
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