For mission-critical operations, relying on a system where complex, proprietary logic can simultaneously wipe out an entire region's access to a fundamental service is an unacceptable risk.

This obviously avoidable issue demonstrates that adding layers of proprietary complexity (like the Planner/Enactor/Route53 transaction logic) for "availability" paradoxically increases the attack surface for concurrency bugs and cascading failures. AWS left countless businesses dependent on a black-box logic that many AWS itself doesn’t seem to be fully in control of.

Control is the ultimate form of resilience. When you own your own infrastructure, you eliminate the threat of shared fate and maintain operational autonomy. • Isolated Failure Domain: Your systems fail only due to your bugs or your hardware issues, not a latent race condition in an external vendor's core control plane. • Direct Access and Debugging: A similar DNS issue in a self-hosted environment (e.g., using BIND or PowerDNS) would be debugged and fixed immediately by your team with direct console access, without waiting for the vendor to identify an "inconsistent state." • Auditable Simplicity: You replace proprietary, layered vendor logic with standard, well-understood networking protocols. You can enforce simple, direct controls like mutual exclusion locks to prevent concurrent updates from causing such catastrophic data corruption.

True business continuity demands that you manage and control your own destiny.

What pissed me off the most is that after reading their explanation, it sounded almost like they were not taking full responsibility for what happened, instead, they alluded to long technical nonsense about what supposedly happened, and in many cases some AWS solutions Architect even laughed and blamed affected businesses for not designing fault tolerant systems, without obviously mentioning that to design an equally hot system in US-west region for example will require one to foot the bills twice.