Truth 4 in Practice: Local Optimization Destroys Global Systems

Before: Teams optimize locally, causing cascading integration failures. Architecture decisions are made in silos without downstream consultation. Outages are discovered by customers. Technical debt accumulates because no one sees the full picture.

After: Leaders architect feedback loops and interfaces that align incentives across teams. Every design review includes stakeholders from affected systems. Outages are anticipated through system modeling and prevented before deployment. Technical debt is visible and managed as a cross-team portfolio.

Application:

Map dependencies before approving changes. Every design document for a system change must include a dependency map.
Architect feedback loops. Build systems that make cross-team impact visible automatically.
Make technical debt a shared portfolio. Track it centrally, allocate capacity collectively, and treat it as a strategic liability.
Enforce contracts, not coordination. APIs, schemas, and service boundaries should be governed by contracts.