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Hexagonal Architecture
Hexagonal architecture (or "ports and adapters") isolates an application's business logic from external technical details (database, UI, third-party APIs), connected through well-defined interfaces.
Why it matters
It makes it easier to swap out a technology (for example changing databases) without touching business logic, and makes the code much easier to test.
Concrete example
Thanks to a hexagonal architecture, a team switches payment providers by changing a single adapter, without touching the application's core business logic.
Related notions
Ports and adaptersSeparation of concernsTestability
Related terms
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