Post-Quantum TLS for Cloud APIs and Microservices
Why every TLS termination is a separate migration boundary
A cloud application rarely has one TLS connection. A single API request can be decrypted and re-encrypted at a CDN, a web application firewall, an API gateway, a load balancer, a service-mesh proxy, an application runtime, and a managed cloud endpoint. Each termination negotiates a fresh session. Upgrading only the public edge can leave every downstream hop protected by classical key exchange.
That architectural fact changes how teams should approach post-quantum TLS. The right unit of migration is not the hostname, service, cluster, or application. It is the directional TLS link between two adjacent termination points, complete with an owner, a policy, a negotiated group, and runtime evidence.
Figure 1. Hybrid negotiation must be configured and proved independently on every TLS link. An edge-only upgrade does not protect downstream hops.
The Unit of Migration Is the TLS Link
Treat the request...
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