D2DO312: Networking at Scale: AWS Transit Gateway War Stories
Devender Singh discusses the practical challenges of managing 95,000 hosts at scale, including network chaos, enterprise technical debt, and the shift from AWS Transit Gateways to AWS Cloud WAN during large cloud migrations.
MAIN POINTS
- Managing 95,000 hosts requires careful handling of network complexity and operational chaos.
- Large enterprise migrations often expose significant technical debt in existing network designs.
- AWS Transit Gateway limitations can motivate a move toward AWS Cloud WAN.
- Practical cloud architecture decisions must balance scalability, migration realities, and long-term maintainability.
TAKEAWAYS
- Scale amplifies small networking issues into major operational problems.
- Migration planning should account for hidden technical debt early.
- Cloud WAN can be a strategic evolution beyond Transit Gateway.
- Real-world architecture success depends on adapting designs to enterprise constraints.