Expose private services publicly because it is faster than private connectivity design. It skips the need to create a measurable acceptance check before accepting external traffic.

Use one flat VPC for every account and workload. It does not resolve fragile deployment sequencing in the developer portal.

Troubleshoot hybrid routing without checking route tables, BGP advertisements, and security policy. It weakens clear ownership during a security architecture review and creates operational fragility.

Design, implement, operate, automate, and secure AWS and hybrid networking using the appropriate AWS networking services and observability. For this case, also create a measurable acceptance check and address fragile deployment sequencing before closure.