What Ports & Adapters is, how it differs from Clean and Onion, and how to apply it to a tool with many inputs and devices. For architects who want a testable core with less ceremony than full Clean Architecture.
→What a modular monolith is, how its modules keep their boundaries, and when it beats both a classic monolith and microservices. For architects structuring a product that several people or teams will grow for years.
→What a plug-in (microkernel) architecture is, the design decisions behind contracts, loading, isolation and versioning, and how to apply it to a configuration tool with many device families. For architects designing or reviewing extensible tools.
→What Vertical Slice Architecture is, why it organises code by request instead of by layer, and how to keep slices from turning into copy-paste. For architects weighing it against Clean Architecture or combining the two.
→What Clean Architecture is, when it fits and when it does not, and how to apply and enforce it. For architects choosing or reviewing a layered design, with a worked example for a configuration tool.
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