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Full network peering requires nonoverlapping CIDRs, while service endpoints abstract the provider's internal addresses. The reported evidence instead concerns VPC peering is nontransitive and cannot use one peer as a router to another peer: an intermediary peering link does not forward packets between two separately peered VPCs.

Mesh peering grows rapidly in connection and route-management complexity compared with centralized transit routing. That property alone cannot account for the reported symptom; an intermediary peering link does not forward packets between two separately peered VPCs.

TGW peering does not automatically propagate all local routes between peer gateways. That property alone cannot account for the reported symptom; an intermediary peering link does not forward packets between two separately peered VPCs.

Session tracking breaks when outbound and return packets are steered through nonsharing firewall states. That property alone cannot account for the reported symptom; a valid network route cannot compensate for missing administrative permission to manage the shared resource.

Peer connection state does not automatically propagate remote VPC CIDR changes. The reported evidence instead concerns cross-account resource sharing affects whether authorized principals can create or manage attachments: a valid network route cannot compensate for missing administrative permission to manage the shared resource.

A route-table entry is not proof the next-hop attachment remains operational. That property alone cannot account for the reported symptom; a valid network route cannot compensate for missing administrative permission to manage the shared resource.

Geolocation routing is a location-matching policy, not a latency-measurement algorithm. For the stated conditions, simple routing alone does not make Route 53 suppress failed records based on application health. The more specific mechanism is Route 53 health-aware failover requires a routing policy and health checks that participate in record selection.

A parent calculated check can represent health criteria spanning several dependencies instead of testing a single IP alone. For the stated conditions, simple routing alone does not make Route 53 suppress failed records based on application health. The more specific mechanism is Route 53 health-aware failover requires a routing policy and health checks that participate in record selection.

Multivalue answers are not a full load balancer but can reduce returning unhealthy addresses. The reported evidence instead concerns Route 53 health-aware failover requires a routing policy and health checks that participate in record selection: simple routing alone does not make Route 53 suppress failed records based on application health.

A broad transit route need not divert packets matching a more-specific valid local route. That adjustment does not address the controlling condition: asymmetric paths can break flows because independent appliances lack the same connection state. Verify both directions of the test connection reach the intended stateful inspection path.

Central transit routing must apply least-privilege route visibility, not automatic full connectivity. In this situation, asymmetric paths can break flows because independent appliances lack the same connection state. The proposed change does not ensure both directions of the test connection reach the intended stateful inspection path.

An attachment can have a different associated routing view from where its CIDR propagates. The needed control instead targets stateful inspection through Transit Gateway requires symmetric forwarding and supported appliance mode where appropriate; it succeeds when both directions of the test connection reach the intended stateful inspection path.

CloudFront's certificate region requirements differ from those of regional ALB listeners. It does not directly achieve the required result: unauthorized principals cannot obtain certificates from the internal CA. The constraint is that a trusted CA becomes a powerful impersonation tool if issuance permissions are overly broad.

IPsec protects network traffic on untrusted transport independently of application-layer encryption. It does not directly achieve the required result: unauthorized principals cannot obtain certificates from the internal CA. The constraint is that a trusted CA becomes a powerful impersonation tool if issuance permissions are overly broad.

Network peer authentication cannot independently prove that a particular HTTPS hostname is the intended app server. It does not directly achieve the required result: unauthorized principals cannot obtain certificates from the internal CA. The constraint is that a trusted CA becomes a powerful impersonation tool if issuance permissions are overly broad.

Domain matching depends on visible protocol metadata and may not identify all encrypted application destinations. The reported evidence instead concerns shield Advanced provides additional DDoS protection features for enrolled supported resources: standard service protections and an Advanced paid protection subscription have different coverage and support features.

Account-by-account manual security policy edits cannot reliably preserve enterprise-wide coverage. That property alone cannot account for the reported symptom; standard service protections and an Advanced paid protection subscription have different coverage and support features.

Layer-seven WAF scope cannot act as a stateful inter-VPC TCP firewall for non-HTTP traffic. For the stated conditions, standard service protections and an Advanced paid protection subscription have different coverage and support features. The more specific mechanism is shield Advanced provides additional DDoS protection features for enrolled supported resources.

A generic default advertisement cannot replace required more-specific route intent in every hybrid design. That adjustment does not address the controlling condition: a router talking to its own address or an incorrect peer cannot establish the required TCP BGP session. Verify BGP becomes Established using the assigned AWS neighbor address.

Negotiation fails when peers cannot agree on an acceptable cryptographic security association. In this situation, a router talking to its own address or an incorrect peer cannot establish the required TCP BGP session. The proposed change does not ensure BGP becomes Established using the assigned AWS neighbor address.

IPsec negotiation cannot complete when intermediate firewall rules block required control packets. It does not directly achieve the required result: BGP becomes Established using the assigned AWS neighbor address. The constraint is that a router talking to its own address or an incorrect peer cannot establish the required TCP BGP session.

A backup tunnel's presence does not guarantee traffic will switch unless routing reacts appropriately. In this situation, a redundant hybrid design must address circuit, location and device failure domains independently. The proposed change does not ensure a controlled circuit failure leaves an approved independent AWS connectivity path active.

Public VIF traffic uses public AWS addresses even when the physical transport is dedicated. It does not directly achieve the required result: a controlled circuit failure leaves an approved independent AWS connectivity path active. The constraint is that a redundant hybrid design must address circuit, location and device failure domains independently.

The gateway decouples connection location from eligible attached private networks under documented rules. It does not directly achieve the required result: a controlled circuit failure leaves an approved independent AWS connectivity path active. The constraint is that a redundant hybrid design must address circuit, location and device failure domains independently.

A private physical circuit and confidentiality cryptography solve different aspects of transport trust. The reported evidence instead concerns AWS Site-to-Site VPN provides IPsec encryption and authentication between configured gateway endpoints: IPsec protects network traffic on untrusted transport independently of application-layer encryption.

Load-balancer TLS termination could change where mutual authentication occurs. For the stated conditions, IPsec protects network traffic on untrusted transport independently of application-layer encryption. The more specific mechanism is AWS Site-to-Site VPN provides IPsec encryption and authentication between configured gateway endpoints.

Secure viewer-to-edge traffic does not protect origin traffic when the origin connection remains cleartext. The decisive technical distinction is AWS Site-to-Site VPN provides IPsec encryption and authentication between configured gateway endpoints; IPsec protects network traffic on untrusted transport independently of application-layer encryption.

Encrypted packet overhead can make sizes that fit locally exceed the negotiated tunnel path. It does not directly achieve the required result: the HPC benchmark achieves the target interinstance latency and message rate. The constraint is that high-performance fabric semantics differ from ordinary TCP service traffic or generic additional ENIs.

Service-level private connectivity avoids exposing unrelated provider address ranges to consumers. That adjustment does not address the controlling condition: high-performance fabric semantics differ from ordinary TCP service traffic or generic additional ENIs. Verify the HPC benchmark achieves the target interinstance latency and message rate.

A nominal bandwidth rating alone does not establish packet-processing performance for tiny packets. It does not directly achieve the required result: the HPC benchmark achieves the target interinstance latency and message rate. The constraint is that high-performance fabric semantics differ from ordinary TCP service traffic or generic additional ENIs.

Using a workload group as source narrows administrative access compared with internet-wide permission. For the stated conditions, security groups lack explicit deny rules while NACL rule-order processing can enforce a scoped subnet deny. The more specific mechanism is nACL explicit deny entries can take precedence based on ascending rule-number evaluation.

Subnet membership alone is weaker identity than authorized workload security-group membership. For the stated conditions, security groups lack explicit deny rules while NACL rule-order processing can enforce a scoped subnet deny. The more specific mechanism is nACL explicit deny entries can take precedence based on ascending rule-number evaluation.

Group references bind access to associated workload identities rather than static IP lists. The reported evidence instead concerns nACL explicit deny entries can take precedence based on ascending rule-number evaluation: security groups lack explicit deny rules while NACL rule-order processing can enforce a scoped subnet deny.