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PQC Migration Frameworks: What Changed Between March and June 2026

The PQC migration conversation shifted from "how do we prepare?" to "how do we deploy?" between March and June 2026. Google set a 2029 completion target, Let's Encrypt committed to Merkle Tree Certificates for post-quantum Web PKI, and the FIPS 140-3 validation gap became a hard deployment constraint. This companion to the March 2026 definitive survey assesses every new framework and methodology published in the quarter — including Meta's migration playbook and its five-level maturity model — against seven deployment-reality challenges, and documents which capabilities the Applied Quantum PQC Migration Framework v2.0 is first to address.

Post-Quantum Cryptography Migration Frameworks: A Definitive Survey Through March 2026

A comprehensive survey of every post-quantum cryptography migration framework published through March 2026 — from ETSI TR 103 619 and the Dutch PQC Migration Handbook to the PQCC Roadmap and NIST SP 1800-38. Each framework is assessed against the capabilities a CISO or program manager needs to execute a real PQC migration, with a detailed comparison table and evidence-based analysis of what the landscape covers well and where the gap between strategic roadmaps and execution methodologies persists.