Developers often build duplicate, one-off integrations for platforms like Airbnb and Booking.com, creating a maintenance nightmare. This spaghetti pattern leads to debugging the same bug in multiple places. With AI generating code faster, this inconsistency worsens, as the AI lacks knowledge of your system's architecture.

The solution is designing a unified pattern or interface. By creating a single `Origin` interface for all platforms, you centralize logic and bug fixes. Adding a new service like Expedia becomes a matter of implementing the interface, taking hours instead of weeks. This ensures code consistency and provides clear instructions for AI code generation.

The author proposes the ARC methodology: Align on the problem, Realize the pattern while building the first feature, then Consolidate to validate scalability. This approach moves beyond Agile's velocity focus to prioritize coherence. The result is faster onboarding for new developers and AI tools that generate code fitting your architecture.