Hexagonal Architecture Offers Fix as Technical Debt Drains 25% of IT Budgets

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A 2024 vFunction survey found that more than half of companies lose over a quarter of their IT budgets to technical debt, largely due to poor architectural boundaries in software. Engineers often learn to code through framework tutorials that encourage mixing business logic with database models and HTTP controllers, gradually eroding code structure. These habits create what experts call Architectural Technical Debt, where replacing a database or upgrading a framework eventually requires rewriting core business rules. Hexagonal Architecture, originally proposed by Alistair Cockburn as the Ports and Adapters pattern, addresses this by strictly isolating core business logic from external tools like databases, APIs, and frameworks through abstract interfaces. A working open-source TypeScript project called FlowBank has been released to demonstrate this pattern applied across real banking operations including transfers, deposits, and payment processing.

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