Due Diligence Report: Cloud-Native Platform Interaction-Boundary Risk
Finding the failures that live between services, in the boundaries no team owns and no load test exercises.
Executive Summary
This review targeted component interaction boundaries specifically, rather than individual service health, to explain a pattern of subtle production failures that standard load testing had not caught.
Findings
Several critical interaction points between services had no single team formally responsible for their correctness, creating a gap in both testing and incident ownership.
Recommendation: Assign explicit ownership to each major interaction boundary, not just to individual services.
Load and integration tests existed per service but not across the specific boundaries where the production incidents had occurred.
Recommendation: Add boundary-specific test scenarios distinct from per-service test suites.
Distributed message queues lacked consistent backpressure handling across producing and consuming services, risking cascading delay under load.
Recommendation: Standardize backpressure handling across all queue producers and consumers.
Conclusion
Every individual component in this platform was healthy in isolation. The risk lived entirely in the unowned space between them, which is precisely where standard, per-service testing does not look.
Frequently Asked
Why do cloud-native platforms fail despite passing all service-level tests?
Many failures occur at interaction boundaries between services that no single team owns and no per-service test suite is designed to exercise.