The document discusses vertical slice architecture as an alternative to traditional n-tier architecture. It describes how vertical slice architecture organizes code into request handlers and domains to improve code simplicity, testability, and modularity. Key aspects include encapsulating requests and responses, separating commands from queries, and structuring code around business functions rather than layers. The presentation argues that vertical slice architecture results in code that is easier to develop, test, and scale compared to traditional n-tier architectures.
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